000			00513nam a2200193Ia 4500
005			20250220125455.0
008			250220s9999||||xx |||||||||||||| ||und||
020			_a0070671176
040			_aMAIN
041			_aEnglish
082			_a628 _bDAV
100			_aDavis, Mackenzie L. and Cornwell, David A.
245			_aIntroduction to environmental engineering
250			_a4th ed.
260			_aNew Delhi _bTata mcGraw-hill _c2010
300			_avarious p.
650			_aEnvironmental Engineering
942			_cBK
999			_c31912 _d31912