Tholfsen, Trygve R. <br/><br/>
Historical thinking :  an introduction / 
by Trygve R. Tholfsen. 
 - New York :  Harper & Row,  1967. 
 - viii, 328 p. ;  21 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History--Methodology.