Gardner, Martin,  1914- <br/><br/>
The unexpected hanging, and other mathematical diversions / 
Martin Gardner. 
 - New York :  Simon and Schuster,  1969. 
 - 255 p. :  illus. ;  23 cm. 
<br/><br/>Includes bibliography. 
<br/><br/> Open access. 
<br/><br/><label>LCCN: </label>688120  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations.