000 00284nam a2200109Ia 45e0
008 181001s1948 xx 000 0 und d
100 _aPhelps E.B.
245 0 _aPublic Health Engineering Vol. I.
260 _aN.Y.
_bJohn Wiley
_c1948
300 _a655
942 _2ddc
_cBK
999 _c1443
_d1443