TY  - BOOK
AU  - Rai, R.K.  .
TI  - Environmental management / 
SN  - 81-7033-154-8 (set)
U1  - G:55(X:8) 
PY  - 1992///
CY  - Jaipur : 
PB  - Rawat Publication , 
KW  - Environmental management
ER  -