Northrop, Eugene P <br/><br/>
Riddles in mathematics :  A Book in paradoxes / 
Eugene P. Northrop 
 - Harmondsworth  Penguin  1944 
 - 239p;pbk 
<br/><br/><label>ISBN: </label>0140204784 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Mathematics--Philosophy
<br/><br/><label>Dewey Class. No.: </label>510.0  / NOR