Why? : sports science = sains dalam olahraga / written by Cho, Young-San ; cartoon by Lee Young-Ho ; alih bahasa, Deni Supriyadi Why? : chemistry = kimia / written by Cho Young-Sun ; cartoon by Lee Young-Ho ; alih bahasa, Deni Supriadi & Team Why? : physics = fisika / written by Cho Young-Sun ; cartoon by Lee Young-Ho ; alih bahasa, Deni Supriadi Why? : chemistry = kimia / written by Cho Young-Sun ; cartoon by Lee Young-Ho ; alih bahasa, Deni Supriadi ; editing, Heru Kustara & Wahyantohadi Why? : robot / written by Cho Young-Sun ; cartoon by Lee Young-Ho ; alih bahasa, Khoirul Huda Why ? sains masa depan / written by Cho Young-Seon ; cartooned by Lee Young-Ho ; alih bahasa, Endang Nawang NoviantiWhy? : listrik & elektron / written by Cho Young-Seon ; cartooned by Lee Young-Ho ; alih bahasa, Endang Nawang NoviantiWhy? : roket dan pesawat luar angkasa / written by Hwang Geon-Gi ; cartoon by Lee Young-Ho ; alih bahasa, Denny SupriyadiWhy ? cahaya dan suara / Cho, Young-Seon ; alih bahasa, Iwan Wildana ; ilustrasi oleh Lee, Young-HoWhy? : cahaya dan suara / written by Cho Young-Seon ; cartooned by Lee, Young-Hoo ; alih bahasa, Iwan Wildana