TY  - BOOK
AU  - Botkin, Daniel B.
AU  - Keller, Edward A.
TI  - Environmental science: : Earth as a living planet
SN  - 9780471389149
AV  - GE 105 .B68 2003
PY  - 2003///
CY  - USA
PB  - Wiley
KW  - Human ecology
KW  - Biodiversity
ER  -