"CHATURVEDI , B.K" <br/><br/>
MATHEMATICAL PUZZLES AND BRAIN TWIOSTERS 

 - NEW DELHI  DIAMOND BOOKS  2004 
 - 158 
<br/><br/><label>ISBN: </label>9788171824083 
<br/><br/><label>Dewey Class. No.: </label>000  / 1140