TY  - BOOK
AU  - Singh, H. H.
AU  - Prasad, Haushila
AU  - Nag, P.
AU  - Singh, H. H.
TI  - Geography and environment: Issues and challenges
U1  - 301.3 
PY  - 1986///
CY  - New Delhi
PB  - Concept Publishing Company
ER  -