Measurement of organochlorine pesticides in drinking water: laboratory technical proficiency testing in Mexico von Leyva-Morales, J. B., Bastidas-Bastidas, P. J., Muñiz-Valencia, R., Ceballos Magaña, S. G., Ponce-Vélez, G., Aguilera-Márquez, D., Grajeda-Cota, P., Navidad-Murrieta, M. S., Flores-Munguía, M. E., Ramírez-Castillo, J. A., Romero-Bañuelos, C. A., Ruíz-Ramos, R., Aguilar-Zarate, G., Huerta-Beristain, G.

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Polycyclic aromatic hydrocarbons in coastal sediments from the subtropical Mexican Pacific von Garcı́a-Ruelas, C., Botello, A.V., Ponce-Vélez, G., Dı́az-González, G.

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Concentrations of selected trace metals (Cu, Pb, Zn), organochlorines (PCBs, HCB) and total PAHs in mangrove oysters from the Pacific Coast of Mexico: an overview von Páez-Osuna, F, Ruiz-Fernández, A.C, Botello, A.V, Ponce-Vélez, G, Osuna-López, J.I, Frı́as-Espericueta, M.G, López-López, G, Zazueta-Padilla, H.M

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Persistent organochlorine pesticides in coastal sediments from Petacalco Bay, Guerrero, Mexico von Leyva-Cardoso, D.O, Ponce-Velez, G, Botello, A.V, Diaz-Gonzalez, G

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Organochlorine pesticides in sediments of the coastal ecosystems from Veracruz, Mexico von Ponce-Vélez, G., Botello, A.V., García-Ruelas, C.

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PAH levels in bivalve mollusks from the Mexican subtropical pacific von BOTELLO, A. V, GARCIA-RUELAS, C, PONCE-VELEZ, G

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Pollution by dissolved polycyclic aromatic hydrocarbons in the Mecoacan Lagoon, Tabasco, Mexico. von Diaz Gonzalez, G, Vazquez Botello, A, Ponce Velez, G

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Polycyclic aromatic hydrocarbons (PAH's) in coastal areas of the Gulf of Mexico. von Vazquez Botello, A, Ponce Velez, G, Diaz Gonzalez, G

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Persistent organic pollutants in sediment cores of Laguna El Yucateco, Tabasco, Southeastern Gulf of Mexico von Ponce-Velez, G, Vazquez Botello, A, Diaz-Gonzalez, G, Garcia-Ruelas, C

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Organochlorine pesticides in lacustrine sediments and tilapias of Metztitlan, Hidalgo, Mexico von Fernández-Bringas, Laura M, Ponce-Vélez, Guadalupe, Calva, Laura G, Salgado-Ugarte, Isaías Hazamamberth, Botello, Alfonso V, Díaz González, Gilberto

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Sources analysis and equivalent toxicity assessment of PAHs impacted sediments in Bahia Blanca Estuary, Argentina von Arias, AH, Marcovecchio, JE, Freije, R H, Ponce Velez, G, Vazquez Botello, A

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Geochemical aspects and heavy metal pollution in the Terminos Lagoon, Campeche. von Ponce Velez, G, Botello, A V

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Presence of metals in organisms and recent sediments from the Sontecomapan Lagoon, Veracruz, Mexico. von Gonzalez Fierro, A, Vazquez Botello, A, Villanueva Fragoso, S, Ponce Velez, G

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Presencia de metales en sedimentos recientes y organismos de la lagunaSontecomapan, Veracruz, México von A. González Fierro, A. Vázquez Botello, S. Villanueva Fragoso, G. Ponce Vélez

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Cultivable, Host-Specific Bacteroidetes Symbionts Exhibit Diverse Polysaccharolytic Strategies von Vera-Ponce de León, Arturo, Jahnes, Benjamin C, Duan, Jun, Camuy-Vélez, Lennel A, Sabree, Zakee L

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Polycyclic aromatic hydrocarbons during the 21st Century in Southern Gulf of Mexico, a prominent petroleum area: A review von Olivares-Rubio, Hugo F., Ponce-Vélez, Guadalupe

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Vertical Distribution of Potentially Toxic Metals and PAHs in the Alvarado Lagoon, Veracruz in the Southern Gulf of Mexico von Velandia-Aquino, Laura Begoña, Botello, Alfonso V., Ponce-Vélez, Guadalupe, Namihira-Santillán, Patricia E., Villanueva-Fragoso, Susana

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Spatial distribution of PAHs, nickel, and vanadium in sediments from a large coastal lagoon near a petroleum extraction area in the southern Gulf of Mexico von Olivares-Rubio, Hugo F., Ontiveros-Cuadras, Jorge Feliciano, Celis-Hernández, Omar, Salazar-Remigio, Laura, Santiago-Pérez, Susana, Girón-García, María Patricia, Ponce-Vélez, Guadalupe

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A Phase 3, Randomized, Double-Blind, Comparator-Controlled Study to Evaluate Safety, Tolerability, and Immunogenicity of V114, a 15-Valent Pneumococcal Conjugate Vaccine, in Alloge... von Wilck, Marissa, Cornely, Oliver A, Cordonnier, Catherine, Velez, Juan Diego, Ljungman, Per, Maertens, Johan, Selleslag, Dominik, Mullane, Kathleen M, Nabhan, Samir, Chen, Qiuxu, Dagan, Ron, Richmond, Peter, Daus, Caroline, Geddie, Kateasha, Tamms, Gretchen, Sterling, Tina, Patel, Shrita M, Shekar, Tulin, Musey, Luwy, Buchwald, Ulrike K

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Organochlorine pesticides and polychlorinated biphenyls in high mountain lakes, Mexico von García-Solorio, Liliana, Muro, Claudia, De La Rosa, Isaías, Amador-Muñoz, Omar, Ponce-Vélez, Guadalupe

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