TY  - BOOK
AU  - Tiwari, Manoj 
AU  - Khulbe, Kapil 
AU  - Tiwari, Archana 
TI  - Environmental studies
SN  - 9788188237821
U1  - 363.70071 
PY  - 2007///
CY  - New Delhi
PB  - I.K. International Publishing House 
N1  - Incluses glossary and  index
ER  -