TY  - BOOK
AU  - Kumar, Arvind & Ramakrishnan, Kumar Parsun
TI  - Ecotechnology and environmental issues
SN  - 9788170356172
U1  - 363.7 KUM 
PY  - 2009///
CY  - Delhi
PB  - Daya Publishing House
N1  - includes index
ER  -