TY  - BOOK
AU  - Sharma PD
TI  - Ecology and Environment .-11th edn .-978-81-7133-965-5
SN  - 978-81-7133-965-5
U1  - G:5(I)   P13/B27345 
PY  - 2013///
PB  - Rastogi Publication, Meerut, Meerut
ER  -