TY  - BOOK
AU  - CLIFFORD,Tim
TI  - Rourke's World of Science Encyclopedia vol.7: Astronomy and Space
SN  - 978-60044-653-5
U1  - 503. 
PY  - 2009///
CY  - Florida
PB  - Rourke
KW  - 0
KW  - Grade 7-9
ER  -