L A Graham <br/><br/>
Ingenious mathematical problems and methods. 

 - New York  Dover Publications   [1959] 
 - 237p  20cm 
<br/><br/><label>ISBN: </label>486205452 
<br/><br/><label>LCCN: </label>5911841 
<br/><br/><label>Subjects--Uniform Titles: </label><br/> Mathematical recreations.<br/> Mathematics<br/>Problems, exercises, etc.<br/>Jeux mathématiques.
<br/><br/><label>Dewey Class. No.: </label>510 G7398i