Phelps, Early Bernard,  1876- <br/><br/>
Public health engineering :  a text book of principles of environmental sanitation / 
Early Bernard Phelps and collaborating authors 
 - New York :  John Wiley,  1958 
 - 2 v. :  ill.,. map, plans, tables, diagrs. ;  22 cm. 
<br/><br/> London, Chapman and Hall  "Reference" at end of some chapters 
<br/><br/>Contents. v.1. pt. 1. : The air contact, with a chapter on insects and inscets control by Harry D.f Pratt. - p. 2. The water contact, by author in collaboration with Clarence J. Velz. v. 2. - p.3. The food contact 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roofs, Suspension
<br/><br/><label>Dewey Class. No.: </label>628