000 00337nam a2200133Ia 4500
008 220201s1971 xx 000 0 eng d
041 _aENG
100 _aDUGGAL, K N
245 0 _aELEMENTS OF PUBLIC HEALTH ENGINEERING
250 _a2ND
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1971
300 _a386
942 _2ddc
999 _c44619
_d44619