000 00290nam a2200121Ia 4500
008 220201s1969 xx 000 0 eng d
100 _aCLARK
245 0 _aWATER SUPPLY AND POLLUTION CONTROL
260 _aDELHI
_bACADEMIC PRESS
_c1969
300 _a575
700 _aVIESSMAN
942 _2ddc
999 _c89082
_d89082