000 00403cam a22001337a 4500
008 180718b1948 xxu||||| |||| 00| 0 eng d
082 _aO P512
100 _aPhelps, Earle B.
245 _aPublic health engineering
_cby Earle B. Phelps
260 _aNew York
_bJohn Wiley
_c1948
300 _a2v.
500 _aContents: v.1. The air contact;v.2. The water contact
650 _aEngineering, Public health
999 _c501821
_d501821