TY  - BOOK
AU  - Vyas, Shyam Manohar
TI  - Paryavaran vishvkosh
SN  - 8187275294
U1  - RR 910.1333703 hP3 
PY  - 2003///
CY  - New Delhi
PB  - Jaina Publishers
KW  - Environment
KW  - Environment studies
ER  -