TY  - BOOK
AU  - Tiwari, S. C. 
TI  - Concepts of modern ecology
SN  - 8121100887
U1  - 581.5 22
PY  - 1992///.
CY  - India
PB  - Bishen Singh Mahendra Pal Singh
KW  - Chemistry
KW  - ecology
N1  - include index
ER  -