Schaaf, William Leonard <br/><br/>
Basic concepts of elementary mathematics 
[by] William L. Schaaf. 
 - 3d ed. 
 - New York  Wiley  [1969] 
 - xx, 500 p.  illus.  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0471756717 
<br/><br/><label>LCCN: </label>72081328 //r89 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>LC Class. No.: </label>QA39  / .S23 1969 
<br/><br/><label>Dewey Class. No.: </label>510