Ryan, Thomas A. <br/><br/>
Principles of industrial psychology / 
by Thomas Arthur Ryan and Patricia Cain Smith. 
 - New York :  Ronald Press Co.,  c1954. 
 - xiv, 534 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology, Industrial.
<br/><br/><label>Dewey Class. No.: </label>158.7  / RYP 1954