TY  - BOOK
AU  - PRATT, John W
TI  - Statistical and mathematical aspects of pollution problems
U1  - 301.31 P75S 
PY  - 1974///
PB  - N.Y
KW  - WATER - POLLUTION - MATHEMATICS
KW  - AIR - POLLUTION - MATHEMATICS
KW  - HUMAN ECOLOGY
ER  -