000 00448nam a2200169Ia 4500
008 210210b1999 xxu||||| |||| 00| 0 eng d
020 _a81 219 1681 X
082 _a574.5 VERC
100 _aVERMA (P S)
245 _aConcepts of ecology: environmental biology.
260 _aND
_bS. Chand & Co. Ltd.
_c1999
300 _avii,264
650 _aEcology environmental biology
690 _aEcology
700 _aAGARWAL (V K).
906 _a055566
999 _c103044
_d103044