TY  - BOOK
AU  - Steere,William Campbell
AU  - Johnson,Willis  Hugh
TI  - The environmental challenge / 
SN  - 0030841852
U1  - 363.7 
PY  - 1974///
CY  - New York : 
PB  - Holt, Rinehart and Winston, 
KW  - Ecology
KW  - Environmental protection
N1  -  Includes bibliographical references and index
ER  -