TY  - BOOK
AU  - Bakshi, D.N.Guha
AU  - Sen, Subir
TI  - A Textbook of environmental science:  for degree course 
U1  - 304.28 
PY  - 2000///
CY  - Calcutta
PB  - Calcutta Book House
KW  - Human ecology
KW  - Social Science
KW  - Factors affecting social behaviour
N1  - Includes bibliography and glossary
ER  -