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020 _a9780070494633
040 _aUPES LIBRARY
_bEnglish
082 _a628
_bBAS
100 _aBasak, N N
_9583
245 _aEnvironmental engineering
260 _aNew Delhi:
_bTata McGraw Hill,
_c2004
300 _a295p.
650 _aEnvironmental engineering
_96834
942 _cBK