000 00320nam a22001457a 4500
999 _c6128
_d6128
003 OSt
020 _a9788121908597
082 _a577 VER
100 _aP.S. Verma
245 _aEnvironmental Biology: Principles of Ecology
260 _aNew Delhi
_bS. Chand
270 _dIndia
300 _aviii, 591
942 _2ddc
_cBK