TY  - BOOK
AU  - Nautiyal, Shivanand
TI  - Paryavaran: samasya aur samadhan
U1  - 363.7 21st
PY  - 1997///
CY  - New Delhi
PB  - Samyik
KW  - Ecology; Air-Pollution; Water-Pollution; Environmental policy
ER  -