000			00294nam a22001337a 4500
020			_a9788173214044
082			_b550 _aSAN
100			_aSantra S.C.
245			_aEnvironmental Science
250			_a3rd
260			_aKolkata _bNew Central Book Agency _c2016
300			_axxx, 1529p.
942			_cBK
999			_c346 _d346