Arun kumar 
Environmental Problems ; Protection and Control Vol 2  
 - New Delhi  Anmol Publications Pvt Limited  1999 
 - 438p 
 -  No 2 .
Arun kumar: Environmental Problems ; Protection and Control Vol 2.  New Delhi.  Anmol Publications Pvt Limited, 1999. 81-261-0355-8--(363.7KUM)   
ENGLISH 
81-261-0355-8 
363.7  / ARU