Allen, Robert W.,  1923- <br/><br/>
Industrial hygiene 
Robert W. Allen, Michael D. Ells, Andrew W. Hart 
 - Englewood Cliffs, N.J  Prentice-Hall  c1976 
 - xvii, 363 p.  ill.  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial hygiene
<br/><br/><label>Dewey Class. No.: </label>613.6  / 2