NORTHROP, Eugene P. <br/><br/>
Riddles in mathematics:   a book of paradoxes 
/[by] Eugene P.Northrop 
 - Middlesex  Penguin books  1964 
 - 239 pages 
<br/><br/> Include index 
<br/><br/><label>ISBN: </label>83743 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510  / NOR