Klee, Victor and Wagon, Stan. <br/><br/>
Old and new unsolved problems in plane geometry and number theory   

 - Washington  Mathematical Association of America  1991 
 - xv, 339p. 
 - The Dolciani Mathematical expositions   no.11 .
<br/><br/> "Purchased under NBHM grant for the year 1996-97"   
<br/><br/><label>Dewey Class. No.: </label>516  / K63.ON