TY  - GEN
AU  - Anil Kumar De
AU  - Arnab Kumar De
TI  - Environmental studies
SN  - 8122419860
U1  - 614.7 
PY  - 2007///
CY  - New Delhi
PB  - New Age International (P) Ltd.
KW  - Public health
KW  - Sanitation and environmental comfort
KW  - Environmental studies
KW  - Human activities and their impact on environment
KW  - Natural resources
ER  -