TY  - BOOK
AU  - Donn, William L.
TI  - Earth: Our Physical Environment
SN  - 0471217859
U1  - 550 
PY  - 1972///
CY  - New York
PB  - John Wiley and Sons
KW  - Pure Sciences
KW  - Science of the earth and other worlds
KW  - Earth sciences
ER  -