TY  - BOOK
AU  - Kupchella, Charles E.
TI  - Environmental science: living within the system of nature 
SN  - 0205117236
U1  - GC 304.2 K965 1989  
PY  - 1989///
CY  - Boston
PB  - Allyn and Bacon
KW  - Ecology
N1  - Includes bibliographical references and index
ER  -