Treffer 1 - 20 von 49 für Suche 'Valenzuela G., Mariana', Suchdauer: 1,75s Treffer weiter einschränken
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

    The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA-derived Quantities, Data Visualization Tools, and Stellar Library von Aragón-Salamanca, Alfonso, Argudo-Fernández, Maria, Aubert, Marie, Barger, Kat, Bates, Dominic, Bautista, Julian, Beaton, Rachael L., Belfiore, Francesco, Bernardi, Mariangela, Bershady, Matthew, Bird, Jonathan, Blanc, Guillermo A., Bolton, Adam S., Bovy, Jo, Byler, Nell, Cano Diaz, Mariana, Chen, Yanping, Doohyun Choi, Peter, Comerford, Julia M., Comparat, Johan, Sophia Dai, Yu, Damke, Guillermo, Darling, Jeremy, Dawson, Kyle, Deconto Machado, Alice, Del Moro, Agnese, Diamond-Stanic, Aleksandar M., Domínguez Sánchez, Helena, Duckworth, Chris, Freischlad, Gordon, Fu, Hai, García-Hernández, D. A., Grabowski, Kathleen, Ha, Jaewon, Harrington, Emily, Hasselquist, Sten, Hayes, Christian R., Hogg, David W., Holley-Bockelmann, Kelly, Holtzman, Jon A., Hsieh, Bau-Ching, Seong Hwang, Ho, Jönsson, Henrik, Kinemuchi, Karen, Kollmeier, Juna, Kreckel, Kathryn, Kruk, Sandor, Lan, Ting-Wen, Li, Cheng, Longa-Peña, Penélope, Ted Mackereth, J., de la Macorra, Axel, Malanushenko, Olena, Maraston, Claudia, Masseron, Thomas, McDermid, Richard M., Meneses-Goytia, Sofia, Merloni, Andrea, Merrifield, Michael, Meszaros, Szabolcs, Minsley, Rebecca, Correa do Nascimento, Janaina, Newman, Jeffrey A., Nitschelm, Christian, Olmstead, Matthew D, Oravetz, Audrey, Pace, Zach, Palicio, Pedro A., Pinsonneault, Marc H., Raddick, M. Jordan, Riffel, Rogério, Robin, Annie C., Roman-Lopes, Alexandre, Rose, Benjamin, Ross, Ashley J., Rowlands, Kate, Sánchez, Sebastián F., Schiavon, Ricardo P., Shen, Shiyin, Shetty, Shravan, Smethurst, Rebecca J., Sobeck, Jennifer, Souter, Barbara J., Stark, David V., Stassun, Keivan G., Steinmetz, Matthias, Storchi-Bergmann, Thaisa, Taghizadeh-Popp, Manuchehr, Tayar, Jamie, Thakar, Aniruddha R., Valenzuela, Octavio, Alan Weaver, Benjamin, Weijmans, Anne-Marie, Wild, Vivienne, Yan, Renbin, Yang, Meng, Zamora, Olga, Zheng, Zheng, Zheng, Zheng, Zhu, Guangtun


    Volltext
    Artikel
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12

    Underlying and proximate drivers of biodiversity changes in Mesoamerican biosphere reserves von Auliz-Ortiz, Daniel Martín, Benítez-Malvido, Julieta, Arroyo-Rodríguez, Víctor, Dirzo, Rodolfo, Pérez-Farrera, Miguel Ángel, Luna-Reyes, Roberto, Mendoza, Eduardo, Álvarez-Añorve, Mariana Yólotl, Álvarez-Sánchez, Javier, Arias-Ataide, Dulce María, Ávila-Cabadilla, Luis Daniel, Botello, Francisco, Braasch, Marco, Casas, Alejandro, Campos-Villanueva, Delfino Álvaro, Cedeño-Vázquez, José Rogelio, Chávez-Tovar, José Cuauhtémoc, Coates, Rosamond, Dechnik-Vázquez, Yanus, Del Coro Arizmendi, María, Dias, Pedro Américo, Dorado, Oscar, Enríquez, Paula, Escalona-Segura, Griselda, Farías-González, Verónica, Favila, Mario E, García, Andrés, García-Morales, Leccinum Jesús, Gavito-Pérez, Fernando, Gómez-Domínguez, Héctor, González-García, Fernando, González-Zamora, Arturo, Cuevas-Guzmán, Ramón, Haro-Belchez, Enrique, Hernández-Huerta, Arturo Heriberto, Hernández-Ordoñez, Omar, Horváth, Anna, Ibarra-Manríquez, Guillermo, Lavín-Murcio, Pablo Antonio, Lira-Saade, Rafael, López-Díaz, Karime, MacSwiney G, M Cristina, Mandujano, Salvador, Martínez-Camilo, Rubén, Martínez-Ávalos, José Guadalupe, Martínez-Meléndez, Nayely, Monroy-Ojeda, Alan, Mora, Francisco, Mora-Olivo, Arturo, Muench, Carlos, Peña-Mondragón, Juan L, Percino-Daniel, Ruth, Ramírez-Marcial, Neptalí, Reyna-Hurtado, Rafael, Rodríguez-Ruíz, Erick Rubén, Sánchez-Cordero, Víctor, Suazo-Ortuño, Ireri, Terán-Juárez, Sergio Alejandro, Valdivieso-Pérez, Ingrid Abril, Valencia, Vivian, Valenzuela-Galván, David, Vargas-Contreras, Jorge Albino, Vázquez-Pérez, José Raúl, Vega-Rivera, Jorge Humberto, Venegas-Barrera, Crystian Sadiel, Martínez-Ramos, Miguel


    Volltext
    Artikel
  13. 13
  14. 14

    Consistent patterns of common species across tropical tree communities von Prado, Paulo I., Ewango, Corneille E. N., Adu-Bredu, Stephen, Affum-Baffoe, Kofi, Alonso, Alfonso, Amani, Christian A., do Amaral, Iêda Leão, Angoboy, Ilondea B., Ashton, Peter, Balinga, Michael Philippe Bessike, Balslev, Henrik, Bánki, Olaf S., Bengone, Natacha Nssi, Berenguer, Erika, Berry, Nicholas, Boundja, Patrick, Camargo, José Luís, Cerón, Carlos, Chave, Jerome, Coelho de Souza, Fernanda, Cornejo Valverde, Fernando, Correa, Diego F., Costa, Janaina Barbosa Pedrosa, Couteron, Pierre, Damasco, Gabriel, de Jesus Veiga Carim, Marcelo, Draper, Freddie C., Farfan-Rios, William, Fauset, Sophie, Feeley, Kenneth J., Feitosa, Yuri Oliveira, Ferreira, Joice, Fletcher, Christine D., Fuentes, Alfredo, Galbraith, David, Gomes, Vitor H. F., Guedes, Marcelino Carneiro, Hall, Jefferson S., Harrison, Rhett D., Honorio Coronado, Euridice N., Imai, Nobuo, Jucker, Tommaso, Kamdem, Narcisse G., Kartawinata, Kuswata, Kearsley, Elizabeth, Khaing, Thiri Toe, Kitayama, Kanehiro, Labrière, Nicolas, Laurance, William F., Lopes, Aline, Lowe, Richard, Lu, Xinghui, Luize, Bruno Garcia, Magalhães, José Leonardo Lima, Magnusson, William E., Malhi, Yadvinder, Manzatto, Angelo Gilberto, Mogollón, Hugo F., Mohd. Said, Mohd. Nizam, Mozombite Pinto, Linder Felipe, Munishi, Pantaleo K. T., Nascimento, Henrique Eduardo Mendonça, Neill, David, Ojo, Lucas, Ondo, Fidèle Evouna, Palacios Cuenca, Walter, Pansonato, Marcelo Petratti, Paudel, Ekananda, Pauletto, Daniela, Peres, Carlos A., Petronelli, Pascal, Phillips, Juan Fernando, Phillips, Oliver L., Priyadi, Hari, Rocha, Maira, Rodriguez-Ronderos, M. Elizabeth, Rudas, Agustín, Rutishauser, Ervan, Sagang, Le Bienfaiteur, Satdichanh, Manichanh, Schöngart, Jochen, Seuaturien, Naret, Simo-Droissart, Murielle, Sist, Plinio, Stas, Suzanne M., Sunderland, Terry C. H., Swaine, Michael D., Tang, Jianwei, Theilade, Ida, Thomas, Sean C., Tran, Hieu Dang, Tshibamba Mukendi, John, Urrego Giraldo, Ligia Estela, Valenzuela Gamarra, Luis, Van Andel, Tinde R., Veridiano, Rizza Karen A., Vieira, Ima Célia Guimarães, von Hildebrand, Patricio, Zagt, Roderick, Zartman, Charles Eugene

    Veröffentlicht in Nature (London)

    Volltext
    Artikel
  15. 15

    More than 10,000 pre-Columbian earthworks are still hidden throughout Amazonia von Peripato, Vinicius, Levis, Carolina, Moreira, Guido A., Gamerman, Dani, ter Steege, Hans, Pitman, Nigel C. A., de Souza, Jonas G., Iriarte, José, Robinson, Mark, Junqueira, André Braga, Trindade, Thiago B., de Almeida, Fernando O., Moraes, Claide de Paula, Lombardo, Umberto, Tamanaha, Eduardo K., Maezumi, Shira Y., Ometto, Jean P. H. B., Braga, José R. G., Campanharo, Wesley A., Cassol, Henrique L. G., Leal, Philipe R., de Assis, Mauro L. R., da Silva, Adriana M., Phillips, Oliver L., Costa, Flávia R. C., Flores, Bernardo Monteiro, Hoffman, Bruce, Henkel, Terry W., Umaña, Maria Natalia, Magnusson, William E., Valderrama Sandoval, Elvis H., Barlow, Jos, Milliken, William, Lopes, Maria Aparecida, Simon, Marcelo Fragomeni, van Andel, Tinde R., Laurance, Susan G. W., Laurance, William F., Torres-Lezama, Armando, Assis, Rafael L., Molino, Jean-François, Mestre, Mickaël, Hamblin, Michelle, Coelho, Luiz de Souza, Lima Filho, Diogenes de Andrade, Wittmann, Florian, Salomão, Rafael P., Amaral, Iêda Leão, Guevara, Juan Ernesto, de Almeida Matos, Francisca Dionízia, Castilho, Carolina V., Carim, Marcelo de Jesus Veiga, Cárdenas López, Dairon, Sabatier, Daniel, Irume, Mariana Victória, Martins, Maria Pires, Guimarães, José Renan da Silva, Bánki, Olaf S., Piedade, Maria Teresa Fernandez, Ramos, José Ferreira, Luize, Bruno Garcia, Novo, Evlyn Márcia Moraes de Leão, Núñez Vargas, Percy, Silva, Thiago Sanna Freire, Venticinque, Eduardo Martins, Manzatto, Angelo Gilberto, Reis, Neidiane Farias Costa, Terborgh, John, Casula, Katia Regina, Demarchi, Layon O., Honorio Coronado, Euridice N., Monteagudo Mendoza, Abel, Montero, Juan Carlos, Schöngart, Jochen, Feldpausch, Ted R., Quaresma, Adriano Costa, Aymard C., Gerardo A., Baraloto, Chris, Castaño Arboleda, Nicolás, Engel, Julien, Petronelli, Pascal, Zartman, Charles Eugene, Killeen, Timothy J., Marimon, Beatriz S., Marimon-Junior, Ben Hur, Schietti, Juliana, Sousa, Thaiane R., Vasquez, Rodolfo, Rincón, Lorena M., Berenguer, Erika, Ferreira, Joice, Mostacedo, Bonifacio, do Amaral, Dário Dantas, Castellanos, Hernán, de Medeiros, Marcelo Brilhante, Andrade, Ana, Camargo, José Luís, Farias, Emanuelle de Sousa, Magalhães, José Leonardo Lima, Mendonça Nascimento, Henrique Eduardo


    Volltext
    Artikel
  16. 16

    Geographic patterns of tree dispersal modes in Amazonia and their ecological correlates von Stevenson, Pablo R., Umaña, Maria Natalia, Lima Filho, Diógenes de Andrade, Salomão, Rafael P., Matos, Francisca Dionízia de Almeida, Phillips, Oliver L., Guevara, Juan Ernesto, Carim, Marcelo de Jesus Veiga, Molino, Jean‐François, Irume, Mariana Victória, Guimarães, José Renan da Silva, Piedade, Maria Teresa Fernandez, Ramos, José Ferreira, Luize, Bruno Garcia, Silva, Thiago Sanna Freire, Venticinque, Eduardo Martins, Manzatto, Angelo Gilberto, Casula, Katia Regina, Cárdenas López, Dairon, Zartman, Charles Eugene, Marimon‐Junior, Ben Hur, Mostacedo, Bonifacio, Assis, Rafael L., Baraloto, Christopher, Petronelli, Pascal, Castellanos, Hernán, Simon, Marcelo Fragomeni, Andrade, Ana, Maniguaje Rincón, Lorena, Schietti, Juliana, Sousa, Thaiane R., Farias, Emanuelle de Sousa, Lopes, Maria Aparecida, Queiroz, Helder Lima de, Aymard C., Gerardo A., Brienen, Roel, Cardenas Revilla, Juan David, Cintra, Bruno Barçante Ladvocat, Duivenvoorden, Joost F., Mogollón, Hugo F., Lozada, José Rafael, Comiskey, James A., Toledo, José Julio, Vicentini, Alberto, Draper, Freddie C., Alonso, Alfonso, Arroyo, Luzmila, Carvalho, Fernanda Antunes, Souza, Fernanda Coelho, Amaral, Dário Dantas do, Feeley, Kenneth J., Barlow, Jos, Jimenez, Eliana M., Villa Zegarra, Boris Eduardo, Henkel, Terry W., Householder, John Ethan, Maas, Paul, Stropp, Juliana, Thomas, Raquel, Durgante, Flávia Machado, Daly, Doug, Huamantupa‐Chuquimaco, Isau, Ríos Paredes, Marcos, Molina, Pardo, Klitgaard, Bente, Marcelo Peña, José Luis, Di Fiore, Anthony, Hilário, Renato Richard, Rivas‐Torres, Gonzalo, Hildebrand, Patricio, Barbosa, Flávia Rodrigues, Bonates, Luiz Carlos de Matos, Carpanedo, Rainiellen de Sá, Zárate Gómez, Ricardo, Junqueira, André Braga, Malhi, Yadvinder, Miranda, Ires Paula de Andrade, Rodrigues, Domingos de Jesus, Vela, César I. A., Zent, Egleé L., Nascimento, Marcelo Trindade, Oliveira, Alexandre A., Scudeller, Veridiana Vizoni, Heijden, Geertje, Balslev, Henrik, Cárdenas, Sasha, Casas, Luisa Fernanda, Farfan‐Rios, William, Ferreira, Cid, Linares‐Palomino, Reynaldo, Mendoza, Casimiro, Mesones, Italo, Torres‐Lezama, Armando, Zagt, Roderick, Palacios Cuenca, Walter, Pansini, Susamar, Pauletto, Daniela, Valderrama Sandoval, Elvis H., Valenzuela Gamarra, Luis, Steege, Hans

    Veröffentlicht in Global ecology and biogeography

    Volltext
    Artikel
  17. 17

    One sixth of Amazonian tree diversity is dependent on river floodplains von Junk, Wolfgang J., Quaresma, Adriano Costa, Demarchi, Layon O., Parolin, Pia, Leão do Amaral, Iêda, Coelho, Luiz de Souza, de Almeida Matos, Francisca Dionízia, Lima Filho, Diógenes de Andrade, Magnusson, William E., Sabatier, Daniel, Revilla, Juan David Cardenas, Irume, Mariana Victória, Ramos, José Ferreira, Rodrigues, Domingos de Jesus, Bánki, Olaf S., Barbosa, Luciane Ferreira, Núñez Vargas, Percy, Venticinque, Eduardo Martins, Manzatto, Angelo Gilberto, Terborgh, John, Castaño Arboleda, Nicolás, Petronelli, Pascal, Zartman, Charles Eugene, Killeen, Timothy J., Rincón, Lorena Maniguaje, Marimon-Junior, Ben Hur, Dantas do Amaral, Dário, Castellanos, Hernán, Simon, Marcelo Fragomeni, Laurance, William F., Laurance, Susan G. W., Farias, Emanuelle de Sousa, Lopes, Maria Aparecida, Magalhães, José Leonardo Lima, Baker, Tim R., Mogollón, Hugo F., Noronha, Janaína Costa, Lozada, José Rafael, Comiskey, James A., Draper, Freddie C., Dávila, Nállarett, Vicentini, Alberto, Dallmeier, Francisco, Gomes, Vitor H. F., Jimenez, Eliana M., Carvalho, Fernanda Antunes, Coelho de Souza, Fernanda, Pansonato, Marcelo Petratti, Barlow, Jos, Dexter, Kyle G., Fine, Paul V. A., Guedes, Marcelino Carneiro, Huamantupa-Chuquimaco, Isau, Licona, Juan Carlos, Pennington, Toby, Maas, Paul, Pos, Edwin, Thomas, Raquel, Vieira, Ima Célia Guimarães, Campelo, Wegliane, Emilio, Thaise, Fuentes, Alfredo, Klitgaard, Bente, Marcelo Pena, José Luis, Souza, Priscila F., Tello, J. Sebastián, Hilário, Renato Richard, Pereira, Luciana de Oliveira, von Hildebrand, Patricio, Barbosa, Edelcilio Marques, Bonates, Luiz Carlos de Matos, Gómez, Ricardo Zárate, Hoffman, Bruce, Junqueira, André Braga, Malhi, Yadvinder, Prieto, Adriana, Rudas, Agustín, Ruschel, Ademir R., Vela, César I. A., Zent, Egleé L., Galbraith, David, Kalamandeen, Michelle, Oliveira, Alexandre A., Rocha, Maira, Sierra, Rodrigo, Tirado, Milton, Baider, Cláudia, Balslev, Henrik, Ferreira, Cid, Mesones, Italo, Zagt, Roderick, Alexiades, Miguel N., de Oliveira, Edmar Almeida, Garcia-Cabrera, Karina, Hernandez, Lionel, Pansini, Susamar, Pauletto, Daniela, Sampaio, Adeilza Felipe, Valderrama Sandoval, Elvis H., Valenzuela Gamarra, Luis

    Veröffentlicht in Nature ecology & evolution

    Volltext
    Artikel
  18. 18

    The biogeography of the Amazonian tree flora von Amaral, Iêda L. do, Lima Filho, Diógenes de Andrade, Magnusson, William E., Sabatier, Daniel, Molino, Jean-François, Martins, Maria Pires, Ramos, José Ferreira, Bánki, Olaf S., Schöngart, Jochen, de Leão Novo, Evlyn Márcia Moraes, Silva, Thiago Sanna Freire, Venticinque, Eduardo Martins, Reis, Neidiane Farias Costa, Casula, Katia Regina, Honorio Coronado, Euridice N., Mendoza, Abel Monteagudo, Montero, Juan Carlos, Costa, Flávia R. C., Feldpausch, Ted R., Killeen, Timothy J., Marimon, Beatriz S., Mostacedo, Bonifacio, Assis, Rafael L., do Amaral, Dário Dantas, Engel, Julien, Petronelli, Pascal, Simon, Marcelo Fragomeni, Andrade, Ana, Laurance, William F., Laurance, Susan G. W., Schietti, Juliana, Sousa, Thaiane R., Mori, Gisele Biem, Lopes, Maria Aparecida, Nascimento, Henrique Eduardo Mendonça, Vasconcelos, Caroline C., Cintra, Bruno Barçante Ladvocat, Baker, Tim R., Mogollón, Hugo F., Peres, Carlos A., Silman, Miles R., Comiskey, James A., Damasco, Gabriel, Dávila, Nállarett, García-Villacorta, Roosevelt, Vicentini, Alberto, Valverde, Fernando Cornejo, Dallmeier, Francisco, Neill, David, de Aguiar, Daniel P. P., Carvalho, Fernanda Antunes, Souza, Fernanda Coelho de, Feeley, Kenneth J., Gribel, Rogerio, Haugaasen, Torbjørn, Pipoly, John J., Paredes, Marcos Ríos, Barlow, Jos, Berenguer, Erika, Ferreira, Joice, Guedes, Marcelino Carneiro, Licona, Juan Carlos, Villa Zegarra, Boris Eduardo, Cerón, Carlos, Durgante, Flávia Machado, Henkel, Terry W., Huamantupa-Chuquimaco, Isau, Stropp, Juliana, Daly, Doug, Pennington, Toby, Vieira, Ima Célia Guimarães, Campelo, Wegliane, Fuentes, Alfredo, Di Fiore, Anthony, van Andel, Tinde R., von Hildebrand, Patricio, Balee, William, Barbosa, Edelcilio Marques, Junqueira, André Braga, Miranda, Ires Paula de Andrade, Prieto, Adriana, Vela, César I. A., Cano, Angela, Lobo, Guilherme, Oliveira, Alexandre A., van der Heijden, Geertje, Baider, Cláudia, Linares-Palomino, Reynaldo, Mendoza, Casimiro, Mesones, Italo, Parada, Germaine Alexander, Torres-Lezama, Armando, Villarroel, Daniel, Zagt, Roderick, Alexiades, Miguel N., de Oliveira, Edmar Almeida, Pansini, Susamar, Pauletto, Daniela, Ramirez Arevalo, Freddy, Palma-Silva, Clarisse

    Veröffentlicht in Communications biology

    Volltext
    Artikel
  19. 19

    Author Correction: One sixth of Amazonian tree diversity is dependent on river floodplains von Junk, Wolfgang J., Quaresma, Adriano Costa, Demarchi, Layon O., Parolin, Pia, Leão do Amaral, Iêda, Coelho, Luiz de Souza, de Almeida Matos, Francisca Dionízia, Lima Filho, Diógenes de Andrade, Magnusson, William E., Sabatier, Daniel, Revilla, Juan David Cardenas, Irume, Mariana Victória, Ramos, José Ferreira, Rodrigues, Domingos de Jesus, Bánki, Olaf S., Barbosa, Luciane Ferreira, Núñez Vargas, Percy, Venticinque, Eduardo Martins, Manzatto, Angelo Gilberto, Terborgh, John, Castaño Arboleda, Nicolás, Petronelli, Pascal, Zartman, Charles Eugene, Killeen, Timothy J., Rincón, Lorena Maniguaje, Marimon-Junior, Ben Hur, Dantas do Amaral, Dário, Castellanos, Hernán, Simon, Marcelo Fragomeni, Laurance, William F., Laurance, Susan G. W., Farias, Emanuelle de Sousa, Lopes, Maria Aparecida, Magalhães, José Leonardo Lima, Baker, Tim R., Mogollón, Hugo F., Noronha, Janaína Costa, Lozada, José Rafael, Comiskey, James A., Draper, Freddie C., Dávila, Nállarett, Vicentini, Alberto, Dallmeier, Francisco, Gomes, Vitor H. F., Jimenez, Eliana M., Carvalho, Fernanda Antunes, Coelho de Souza, Fernanda, Pansonato, Marcelo Petratti, Barlow, Jos, Dexter, Kyle G., Fine, Paul V. A., Guedes, Marcelino Carneiro, Huamantupa-Chuquimaco, Isau, Licona, Juan Carlos, Pennington, Toby, Maas, Paul, Pos, Edwin, Thomas, Raquel, Vieira, Ima Célia Guimarães, Campelo, Wegliane, Emilio, Thaise, Fuentes, Alfredo, Klitgaard, Bente, Marcelo Pena, José Luis, Souza, Priscila F., Tello, J. Sebastián, Hilário, Renato Richard, Pereira, Luciana de Oliveira, von Hildebrand, Patricio, Barbosa, Edelcilio Marques, Bonates, Luiz Carlos de Matos, Gómez, Ricardo Zárate, Hoffman, Bruce, Junqueira, André Braga, Malhi, Yadvinder, Prieto, Adriana, Rudas, Agustín, Ruschel, Ademir R., Vela, César I. A., Zent, Egleé L., Galbraith, David, Kalamandeen, Michelle, Oliveira, Alexandre A., Rocha, Maira, Sierra, Rodrigo, Tirado, Milton, Baider, Cláudia, Balslev, Henrik, Ferreira, Cid, Mesones, Italo, Zagt, Roderick, Alexiades, Miguel N., de Oliveira, Edmar Almeida, Garcia-Cabrera, Karina, Hernandez, Lionel, Pansini, Susamar, Pauletto, Daniela, Sampaio, Adeilza Felipe, Valderrama Sandoval, Elvis H., Valenzuela Gamarra, Luis

    Veröffentlicht in Nature ecology & evolution

    Volltext
    Artikel
  20. 20