AU  - Kaushik,Jay Narayan .
TI  - Paryabaran pradushan : samashya aur samadhan  / 
SN  - 9788170635840
U1  - 891.43 
PY  - 2007///
CY  - New Delhi
PB  - Arya Book Depo , 
KW  - Hindi article
ER  -