TY  - BOOK
AU  - Keller Edward A
AU  -  Botkin Daniel B
TI  - Essential elnvironmental science
SN  - 9780471704119
U1  - U:(G:55), P8 
PY  - 2008///
CY  - Hoboken
PB  - John Willey and Sons       
KW  - Geography
N1  - Appendics: P. 405-09; Glossary: P. 410-16
ER  -