Schaaf, William Leonard <br/><br/>
Basic concepts of elementary mathematics 
[by] William L. Schaaf. 
 - New York  Wiley  1960. 
 - xvii, 386 p.  illus. 
<br/><br/>Includes bibliographical footnotes and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics