Leff, Gordon. <br/><br/>
History and social theory / 
[by] Gordon Leff. 
 - Alabama, U.S.A. :  University of Alabama Press,  1969. 
 - vi, 240 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>7876586 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History--Methodology.<br/>History--Research.