TY  - BOOK
AU  - Chhatwal, G. R. (ed); Pandey, D. K. (ed) & Nanda, K. K. (ed)
TI  - Encyclopaedic dictionary of environment; Vol-IV: S-Z
SN  - 81-7041-104-1
U1  - R574.503 
PY  - 1988///
CY  - New Delhi
PB  - Anmol Publications
ER  -