Gladstone, W E, Comp. <br/><br/>
Pergamon puzzle, Book1 

 -  Pergamon Press, London  1968 
 - 102 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Games of Puzzles
<br/><br/><label>Dewey Class. No.: </label>793.73  GLA-P.1