Phelps, Earle B. <br/><br/>
Public health engineering 
by Earle B. Phelps 
 - New York  John Wiley  1948 
 - 2v. 
<br/><br/> Contents: v.1. The air contact;v.2. The water contact 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering, Public health
<br/><br/><label>Dewey Class. No.: </label>O P512