Keene, Carolyn <br/><br/>
The Greek symbol mystery 
Carolyn Keene 
 - New York  Grosset & Dunlap  1981 
 - 171 p 
<br/><br/><label>ISBN: </label>9780448436913 
<br/><br/><label>Dewey Class. No.: </label>823.0872 KEE