000 00371nam a22001337a 4500
020 _a8121908590
050 _aQH 308.5
_b.V47 2013
110 _aP.s. Verma & V.k. Agarwal
245 _aEnvironmental Biology
_bprinciples of ecology
260 _aIndia
_bS.chand & company pvt.ltd
_c1983
300 _aviii, 591pgs
_bincludes illustrustions
650 _aBiology
942 _cLL
999 _c3565
_d3565