000			00325nam a22001337a 4500
020			_a9788120347861
082			_a628 _bRAN.E
100			_aS.V.S.Rana.
245			_aEssentials of ecology and environmental science
250			_a5th ed.
260			_aNew Delhi: _bPHI Learning, _c2013.
300			_axvii,590p.
942			_cBK
999			_c584654 _d584654