Freudenthal, Hans <br/><br/>
Weeding and sowing  : preface to a science of mathematical education 
Hans Freudenthal 
 - Dordrecht  D. Reidel Publishing Company  1978 
 - ix,314p.  ill.  24cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>9027707898 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Study and teaching
<br/><br/><label>LC Class. No.: </label>MATH QA11.F78