TY  - BOOK
AU  - Gregory,Kenneth J.
TI  - Environmental sciences: a student's companion 
SN  - 9781412947053
AV  - GE105 E584
PY  - 2009///
CY  - Los Angeles, Calif.
PB  - SAGE
KW  - ENVIRONMENTAL SCIENCES
N1  - Includes bibliographical references and index
ER  -