000 00320nam a2200121Ia 4500
008 220201s1977 xx 000 0 eng d
100 _aBharat Singh & Gupta,DL
245 0 _aElements of Water Supply & Sanitary Engg
250 _a2nd
260 _bLudhiana:katson publishing house
_c1977
300 _a284
942 _2ddc
999 _c80251
_d80251