TY  - BOOK
AU  - Anderson, Stanley H., Beiswenger, Ronald E., Purdom, P. Walton.
TI  - Environmental science. - 4th edition
SN  - 0-02-303191-3
PY  - 1993///
CY  - New York ; Toronto ; New York 
PB  - Macmillan Publishing Company ; Maxwell Macmillan Canada
ER  -