TY  - BOOK
AU  - Purdom,P.Walton
AU  - Anderson,Stanley H.
TI  - Environmental science: managing the environment 
SN  - 067508170X
PY  - 1980///
CY  - Columbus, Ohio
PB  - Merrill
KW  - Ecology
KW  - Environmental protection
KW  - Environmental sciences
N1  - Includes index; Bibliography: p. 488-494
ER  -