Barr , Stephen <br/><br/>
Mathematical Brain Benders  

 - Newyork :  Dover ,   1969 .  
 - 224 p . ;   21 cm  
<br/><br/><label>ISBN: </label>9780486242606 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical Brain Benders 
<br/><br/><label>Dewey Class. No.: </label>793.73  / BAR