Mathematics education :  The sixty-ninth Yearbook of the National Society for the study of Education/ 
edited by Edward g. begle, Herman G. Richey. 
 - Chicago :  University of Chicago Press,  1970. 
 - xi, 467 p. :  ill. ;  24 cm. 
 - Series on mathematics education ;  v. 2 .
 - Series on mathematics education ;  v. 2. .
<br/><br/>Includes index. 
<br/><br/><label>LCCN: </label>2009280225 
<br/><br/><label>Nat. Bib. No.: </label>GBA937231  bnb 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>015109983  Uk 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching
<br/><br/><label>LC Class. No.: </label>QA14.S56  / MAT 2009 
<br/><br/><label>Dewey Class. No.: </label>510.7105957