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020 _a9788194538028
_qPB
040 _aUPES LIBRARY
_bEnglish
082 _a628
_bGAR
100 _aGarg, Santosh Kumar
_92697
245 _aEnvironmental Studies
250 _a5th ed.
260 _bKhanna,
_aDelhi :
_c2020
300 _axix, 390p.
650 _aEnviornmental engineering
_9767891
700 _aGarg, Ranjini
_9767777
942 _cBK
999 _c825701
_d825701