TY  - BOOK
AU  - Santra, S. C.
TI  - Environmental science
SN  - 9788173814044
U1  - 363.7 
PY  - 2016///
CY  - Guwahati
PB  - New Central Book Agency (P) Ltd.
KW  - Environmental science
N1  - Includes bibliographical references and index
ER  -