TY  - BOOK
AU  - WOODFORD,Chris
TI  - Jejak Sejarah Sains Gravitasi: = Routes of Science Gravity 
SN  - 979-534-287-8
U1  - 521.1 
PY  - 2006///
CY  - Klaten 
PB  - Pakar Raya
KW  - 0
KW  - Grade 7-9
ER  -