TY  - BOOK
AU  - Kumar H D
AU  - H D Kumar
TI  - Modern concepts of ecology
SN  - 0706986768
U1  - 577.27 
PY  - 1995///
CY  - New Delhi
PB  - Vikas publishing house
KW  - Energetics
KW  - World biota
KW  - Biosphere pollution
ER  -