Freudenthal, Hans,  1905- <br/><br/>
Mathematics as an educational task. 

 - Dordrecht;  Reidel,  [1973]. 
 - xii, 680 p.;  23 cm. 
<br/><br/>Bibliography: p. [678]-680. 
<br/><br/><label>ISBN: </label>9027702357 
<br/><br/><label>LCCN: </label>72077874 
<br/><br/><label>Nat. Bib. No.: </label>Ne73-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics---Study and teaching
<br/><br/><label>Dewey Class. No.: </label>510.7  / F889m