TY  - BOOK
AU  - KIM,Nam-Gil
AU  - Bambang Sudiyono
AU  - Irene Christine
TI  - Why? Happy Science Series vol. 04
SN  - 978-979-27-7361-3
U1  - 500.07 
PY  - 2010///
CY  - Jakarta
PB  - Elex Media Komputindo
KW  - 0
KW  - Grade 7-9
ER  -