TY  - BOOK
AU  - Tiwari,S.C.
TI  - Concepts of modern ecology.
SN  - 8121100887
U1  - 577.3 22
PY  - 1992///
CY  - Dehra Dun
PB  - Bishen sing mahendra pal singh
KW  - Ecology
N1  - Including index
ER  -