Johnstone, Rutherford Thompson  1894-1967 <br/><br/>
Occupational medicine and industrial hygiene/ 
by Rutherford T. Johnstone 
 - St. Louis:  Mosby,  1948 
 - 604 p.:  illus;  25cm 
<br/><br/> Highly recommended for digitizing 
<br/><br/>Includes bibliographical references and indexes 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Occupational Diseases<br/>Occupational Medicine