Brecher, Erwin <br/><br/>
Challenging science puzzles / 
Erwin Brecher and Mike Gerrard. 
 - New Delhi :  Goodwill Pub. House,  [1997] 
 - 95 p. : ill. 
<br/><br/> Includes glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientific recreations