Freudenthal, Hans.  x <br/><br/>
Mathematics ovbserved  x 

 - x 
 - Lond.  World University Library  1967 
 - 256 
<br/><br/>x 
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics - History Mathematics - History 
<br/><br/><label>Dewey Class. No.: </label>510/FRM