TY  - BOOK
AU  - Chauhan, A.S.
TI  - Environmental studies
SN  - 818632187X
U1  - 372.357 
PY  - 2006///
CY  - New Delhi
PB  - M/S Jain Brothers 
KW  - Education
KW  - Environmental studies
KW  - Labor
N1  - Includes bibliographical references and index
ER  -