TY  - BOOK
AU  - Botkin,Daniel B.
AU  - Keller,Edward A.
TI  - Environmental science: earth as a living planet 
SN  - 0470049901
AV  - GE105  .B68 2007
PY  - 2007///
CY  - New York
PB  - John Wiley
KW  - Environmental sciences
KW  - Case studies
KW  - Human ecology
KW  - Biological diversity
ER  -