000 00323nam a2200133Ia 4500
008 220201s1981 xx 000 0 eng d
100 _aGUPTA D L
245 0 _aPROJECT WORK IN PUBLIC HEALTH ENGINEERING
250 _a2
260 _aDELHI
_bKATSON PUB HOUSE
_c1981
300 _a96
700 _aTANGARI B B
942 _2ddc
999 _c89993
_d89993