Why ? Air / written by, Nam-Seok Kim; alih bahasa, Deni Supriadi Why? : kotoran / written by Heo Soon Bong ; cartoon by Song Hoe Seok ; alih bahasa, Deni Supriadi Why? : happy science 3 / written by Kim Nam-Gil ; alih bahasa, Morin Tanang ; editor, Irena Christine Flip book : the revoluntionary animations of the 21st century / text, Kim Taeryung, Cho Juhyun, Eugene Kim, Moon Won Leep, Jun Eun Kyung, Lee Jiyong ; editors and proofreaders, Cho Juhyun, Nam Sunwoo, Huh Mi Seok, Chung Haesun ; photography, Kim Jinho (sustain-works) ; translation, art & text, Huh Mi Seok Why? : chemistry = kimia / written by Cho Young-Sun ; cartoon by Lee Young-Ho ; alih bahasa, Deni Supriadi ; editing, Heru Kustara & Wahyantohadi Why? : physics = fisika / written by Cho Young-Sun ; cartoon by Lee Young-Ho ; alih bahasa, Deni SupriadiWhy? : happy science 4 / written, Kim Nam-Gil ; alih bahasa, Bambang Sudiyono ; editor, Irene ChristineWhy? : fish = ikan / written by Kim Nam-Gil ; alih bahasa, Endah Nawang NoviantiAku tumbuh! / Kim Jiho ; ilustrasi, Hwang Ha Seok ; alih bahasa, Yuniar Budiarti ; editor, Dini PandiaAku pilek! / oleh, Kim Jiho ; ilustrasi, Hwang Ha Seok ; alih bahasa, Yunia Budiarti ; editor, Dini Pandia