TY  - BOOK
AU  - R. L. Kotpal
AU  -  N. P. Bali, 
TI  - Concepts of Ecology : Environmental and Field Biology
U1  - 574.5 
CY  - Jalandhar
PB  - Vishal Publishing Co
N1  - R. L. Kotpal & N. P. Bali: Concepts of Ecology : Environmental and Field Biology.  Jalandhar.  Vishal Publishing Co, Rs. 75--(574.5KOT)
ER  -