Freudenthal, Hans,  Dr.,  1905- <br/><br/>
Mathematics as an educational task / 
by Hans Freudenthal 
 - Dordrecht :  D. Reidel,  c1973 
 - xii, 680 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>902770322 :  ? 60.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching
<br/><br/><label>Dewey Class. No.: </label>507