Kranzberg, Melvin <br/><br/>
By the sweat of thy brow  work in the Western world 
by Melvin Kranzberg and Joseph Gies. 
 - New York  Putnam  [1975] 
 - 248 p.  21 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0399113126  6.95 
<br/><br/><label>LCCN: </label>74079654 //r86 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor--History.
<br/><br/><label>LC Class. No.: </label>HD4841  / .K7 1975 
<br/><br/><label>Dewey Class. No.: </label>306/.36/09