na INLIS000000000041114 20231206025119 0010-0119006027 231206 b 0 ind Happy science 2 / Cho Young Sun; Ilustrated by Lee Hye Cho; Supervised by Kim Gi Myung CHO, Young-Sun Jakarta : Elex Media Komputindo, 2010 207 p. : ill. ; 24 cm. 5+6:82-341 CHO h 5+6:82-341 CHILDREN BOOKS COMICS SCIENCES LIVING 193/BA/2015