Hopkins, William Stephen <br/><br/>
Labor in the American economic / 
by William Stephen Hopkins 
 - New York :  Mc Graw-Hill,  1948 
 - 368 p. ;  23 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor and laboring classes--United States