Waismann, Friedrich <br/><br/>
Introduction to mathematical thinking  the formation of concepts in modern mathematics 
by Friedrich Waismann, with a foreword by Karl Menger 
 - New York  Harper & Row  1959 
 - 260 p. : ill. ; 21 cm. 
<br/><br/><br/>eng ger 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Philosophy<br/>Number concept