00457nam a2200181Ia 4500003000400000005001700004008004100021020001500062040000700077041001200084082001500096100001400111245005100125260004300176300002600219365001300245700001700258OSt20260415181953.0210423s2012    xx            000 0 und d  a8121908590  cAL  aEnglish  a628 bVERE  aVarma P S  aEnvironmental biologyb: principles of ecology  aNew DelhibS Chand & Company Ltdc2012  aviii,591bPBc21x13cm  b200cINR  aAgarwal, V K