TY  - BOOK
AU  - Rao, P.L. Diwakar (ed)
TI  - Pollution control handbook
U1  - 363.73/RAO 
PY  - 1990///
CY  - Secunderabad
PB  - Utility
KW  - Pollution-Enviornmental aspects
KW  - Social problems, welfare and services
ER  -