TY  - BOOK
AU  - Mason, William H and Folkerts, George W 
AU  -  Folkerts, George W
TI  - Environmental Problems: Principles Readings And Comments
PY  - 1973///
CY  - America
PB  - Wm.C.Brown Co. Publishers, 
KW  - Environmental Problems: Principles Readings And Comments
N1  - General
ER  -