250 Challenging Puzzles 
250 Challenging Puzzles 
 - 1st ed.  "178 p. : ill., pbk." 
 - New Delhi  Goodwill Publishing House  9999 
<br/><br/><label>ISBN: </label>9788172450908 
<br/><br/><label>Dewey Class. No.: </label>793.73 SET  / 22.793.73 SET