Retraction: Effect of Types and Gap on Spark Plugs on Exhaust Emissions on the 110CC Double Wheel Vehicles and Its Dissemination Using Website ( J. Phys.: Conf. Ser. 1114 012097) von Ginting, Tinus, Manurung, Hotler, Harahap, Astro Julida, Ongko, Erianto, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Saddhono, Kundharu, Sriadhi, S, Supriyono, Iskandar, Akbar, Saleh, A A, Sudarsana, I Ketut

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Retraction: Sylabus and Matrials Design for Vocational Student and Its Dissemination Using Website ( J. Phys.: Conf. Ser. 1114 012023) von Harahap, Astro Julida, Ongko, Erianto, Kurnia, Dian, Manurung, Hotler, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Djanggih, Hardianto, Saddhono, Kundharu, Rianita, Dian, Setiawan, Muhammad Ikhsan, Setiawan, Yuliyanto Budi, Manurung, Rosida Tiurma, Sriadhi, S, Sinurat, Mangasi, Siregar, Aisyah, Hutauruk, Rapat Piter Soni, Sibarani, Nico Benjamain

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Sylabus and Matrials Design for Vocational Student and Its Dissemination Using Website von Harahap, Astro Julida, Ongko, Erianto, Manurung, Hotler, Kurnia, Dian, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Djanggih, Hardianto, Saddhono, Kundharu, Rianita, Dian, Setiawan, Muhammad Ikhsan, Setiawan, Yuliyanto Budi, Manurung, Rosida Tiurma, Sriadhi, S, Sinurat, Mangasi, Siregar, Aisyah, Soni Hutauruk, Rapat Piter, Sibarani, Nico Benjamain

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Retraction: Electronic Model for Election of Governor of Student Executive Board (BEM) with Radio Frequency Identification (RFID) Reading on Student Identity Card ( J. Phys.: Conf.... von Gultom, Togar Timoteus, Ongko, Erianto, Manurung, Hotler, Harahap, Astro Julida, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Sriadhi, S, Supriyono, Iskandar, Akbar, Brata, Diah Puji Nali, Saleh, A A, Yuniningsih, Daengs, Achmad, Hadikurniawati, Wiwien, Winarno, Edy

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Retraction: Variation Ignition Timing Against Environmentally Friendly Gas Exhaust Emissions on 7K Gasoline Engine and Its Dissemination Using Website ( J. Phys.: Conf. Ser. 1114 0... von Sihombing, Rudi Adolf Hotman, Telaumbanua, Fatolosa, Manurung, Hotler, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Nanuru, Ricardo Freedom, Parwito, Suwarni, Susena, Karona Cahya, Aprilianasari, Indah, Abdussakir, Saleh, A A, Setiawan, Muhammad Ikhsan, Sriadhi, S

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Effect of Types and Gap on Spark Plugs on Exhaust Emissions on the 110CC Double Wheel Vehicles and Its Dissemination Using Website von Ginting, Tinus, Manurung, Hotler, Harahap, Astro Julida, Ongko, Erianto, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Saddhono, Kundharu, Sriadhi, S, Supriyono, Iskandar, Akbar, Saleh, A A, Sudarsana, I Ketut

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Variation Ignition Timing Against Environmentally Friendly Gas Exhaust Emissions on 7K Gasoline Engine and Its Dissemination Using Website von Sihombing, Rudi Adolf Hotman, Telaumbanua, Fatolosa, Manurung, Hotler, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Nanuru, Ricardo Freedom, Parwito, Suwarni, Susena, Karona Cahya, Aprilianasari, Indah, Abdussakir, Saleh, A A, Setiawan, Muhammad Ikhsan, Sriadhi, S

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Electronic Model for Election of Governor of Student Executive Board (BEM) with Radio Frequency Identification (RFID) Reading on Student Identity Card von Gultom, Togar Timoteus, Ongko, Erianto, Manurung, Hotler, Harahap, Astro Julida, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Sriadhi, S, Supriyono, Iskandar, Akbar, Brata, Diah Puji Nali, Saleh, A A, Yuniningsih, Daengs, Achmad, Hadikurniawati, Wiwien, Winarno, Edy

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Retraction: Designing Data Mining Applications with Rough Set Algorithm for Provision of Recommendations in the Selection of Training Topics on Online Learning ( J. Phys.: Conf. Se... von Manurung, Hotler, Ongko, Erianto, Harahap, Astro Julida, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Sriadhi, S, Kusuma Putra, Aditya Halim Perdana, Muslim, Ahmad, Hamzah, Nanuru, Ricardo Freedom, Saleh, A A, Indahingwati, Asmara, Kurniawan, Citra, Indra Iswara, Ida Bagus Ary, Hasibuan, Abdurrozzaq, Wuryani, Eni, Hadikurniawati, Wiwien, Winarno, Edy

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Designing Data Mining Applications with Rough Set Algorithm for Provision of Recommendations in the Selection of Training Topics on Online Learning von Manurung, Hotler, Ongko, Erianto, Harahap, Astro Julida, Hartono, H, Abdullah, Dahlan, Erliana, Cut Ita, Sriadhi, S, Kusuma Putra, Aditya Halim Perdana, Muslim, Ahmad, Hamzah, Nanuru, Ricardo Freedom, Saleh, A A, Indahingwati, Asmara, Kurniawan, Citra, Indra Iswara, Ida Bagus Ary, Hasibuan, Abdurrozzaq, Wuryani, Eni, Hadikurniawati, Wiwien, Winarno, Edy

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