TY  - BOOK
AU  - AGARWAL,K.M
AU  - DEB,C
AU  - SIKDAR, P.K.
TI  - A TEXTBOOK OF ENVIRONMENT
SN  - 0333 937473
U1  - 577 
PY  - 2002///
CY  - Delhi
PB  - Macmillan and Company Limited, Delhi 
ER  -