Schaaf, William L. <br/><br/>
Recreational mathematics : A guide to the literature 

 - Washington  National Council of Teachers of Mathematics  1958 
 - 143p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bibliographies and catalogues
<br/><br/><label>Dewey Class. No.: </label>016.51 SCH