TY  - BOOK
ED  - BRITANICA
TI  - Britanica learning library : planet earth
SN  - 1-59339-032-7
U1  - GR. 550 B862 2003 
PY  - 2003///
CY  - Chicago : 
PB  - Encyclopaedia Britanica, 
KW  - Earth (Science)
KW  - Planet earth
N1  - 1. Includes glossary
ER  -