TY  - BOOK
AU  - Kumar, Arvind 
AU  - Nehar,Shamshun
TI  - Environmental protection
SN  - 8170354889
U1  - 333.7 KUM 
PY  - 2007///
CY  - Delhi
PB  - Daya Pub. House
KW  - Environmental protection
N1  - Includes bibliographical references and index
ER  -