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020 _a9788174091758
_qPB
040 _aUPES LIBRARY
_bEnglish
082 _a660
_bCHA
100 _aChattopadhyay, P.
_91444
245 _aUnit operations of chemical engineers Vol.2
260 _bKhanna,
_aDelhi :
_c2021
300 _a926p.
650 _aChemical engineering
_9769439
942 _cBK
999 _c825737
_d825737