Niederman, Derrick <br/><br/>
Hard-to-solve math puzzles / 
Derrick Niederman 
 - New Delhi :  Goodwill Publishing House,  [20-?] 
 - 92 p. :  ill. ;  22 cm. 
<br/><br/>Includes  index 
<br/><br/><label>ISBN: </label>9788172452926(pbk.)  Rs.60.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical recreations
<br/><br/><label>Dewey Class. No.: </label>793.74