TY  - BOOK
AU  - Armstrong, Terry R.
TI  - WHY DO WE STILL HAVE AN ECOLOGICAL CRISIS?
U1  - 301.31 
PY  - 1972///
CY  - Englewod Cliffs, N. J.
PB  - Prentice-Hall
KW  - Pollution
KW  - Pollution -- Economic Aspects
ER  -