000 00552nam a2200229Ia 4500
008 240107s9999 xx 000 0 und d
020 _a9.78812E+12
082 _a375.008 3 DUG
082 _bDUG
100 _aDUGGAL K N
245 0 _aELEMENTS OF ENVIRONMENTAL ENGINEERING
245 0 _aELEMENTS OF ENVIRONMENTAL ENGINEERING
250 _n1st
260 _aNEW DELHI
260 _bS CHAND
260 _c2017
300 _a451
365 _b360
650 _aENVIRONMENTAL SCIENCE
650 _bENVIRONMENTAL ENGINEERING
942 _cREF
999 _c17659
_d17659