Keene, Carolyn <br/><br/>
The hidden staircase 
Carolyn Keene 
 - New York  Grosset & Dunlap  1987 
 - 182 p 
<br/><br/><label>ISBN: </label>9780448095028 
<br/><br/><label>Dewey Class. No.: </label>823.0872 KEE