000			00318nam a22001337a 4500
005			20210803120223.0
008			210803b ||||| |||| 00| 0 eng d
041			_aeng
100			_aSingh Alam
245			_aEnvironmental science and engineering
260			_aN Delhi _bABIPT Pub _c1986
300			_a251
942			_cBK
999			_c62478 _d62478