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020 _a9788120326057
040 _aUPES LIBRARY
_bEnglish
082 _a628
_bHEN
100 _aHenry, J Glynn
_917395
245 _aEnvironmental science and engineering
250 _a2nd ed.
260 _aNew Delhi :
_bPHI Learning,
_c2010
300 _a778p.
650 _aEnvironmental engineering
942 _cBK
999 _c5749
_d5749