Keene, Carolyn <br/><br/>
The mystery of the 99 steps. / 
Carolyn Keene. 
 - New York :  Grosset,  1966. 
 - 176 
 - Nancy Drew .
<br/><br/> A Nancy Drew mystery. 
<br/><br/><label>ISBN: </label>0448095432 
<br/><br/><label>Subjects--Topical Terms: </label><br/>mystery-fiction