TY  - BOOK
AU  - Verma, PS.
AU  - Agarwal, VK.
TI  - Principles of ecology: environmental biology
U1  - 574.5, 
PY  - 1989///
CY  - Delhi
PB  - S. Chand
N1  - Book lost & 3 times cost (Rs 35 x 3 = 105) recovered vide challan No.3740 dated 05.12.19
ER  -