Rodgers, Daniel T. <br/><br/>
The work ethic in industrial America, 1850-1920 / 
Daniel T. Rodgers. 
 - Chicago :  University of Chicago Press,  1978. 
 - xv, 300 p. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0226723518 
<br/><br/><label>LCCN: </label>77-081737 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Labor--History.--United States<br/>Working Class--History.--United States<br/>Work ethic--United States.<br/>Middle class--History.--United States<br/>Giai đoạn 1850-1920<br/>Đạo đức nghề nghiệp<br/>Lao động<br/>Xã hội học<br/>Sociology.
<br/><br/><label>LC Class. No.: </label>HD8072  / .R76 
<br/><br/><label>Dewey Class. No.: </label>301  / ROD 1978