Henkin, Leon. <br/><br/>
Retracing elementary mathematics /    
Leon Henkin. 
 - New York :   Macmillan,   1962. 
 - 418 p. :    ill. ;    24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics, Elementary.--------
<br/><br/><label>Dewey Class. No.: </label>510.1 HEN