000 00300nam a2200121Ia 4500
008 220201s1960 xx 000 0 eng d
082 _a628.1
_bCHO
100 _aChowdhury, RP Roy
245 0 _aWater supply & sanitary engg.
260 _bCalcutta: KR Chowdhury
_c1960
300 _a300
942 _2ddc
999 _c70747
_d70747