TY  - BOOK
AU  - SINGH R P
AU  -  ISLAM Zubairul
TI  - Environmental studies
SN  - 9788180697746
U1  - U:(G:55), Q2 
PY  - 2012///
CY  -  New Delhi 
PB  - Concept Publishing Company       
KW  - Geography
N1  - Glossary: p 318-333
ER  -