Keene, Carolyn. <br/><br/>
The thirteenth pearl / 
by Carolyn Keene. 
 - New York :  Grosset & Dunlap,  c1979. 
 - 179 p., [1] leaf of plates :  ill. ;  20 cm. 
 - Her Nancy Drew mystery stories ; 56 .
<br/><br/> Asked to locate a stolen necklace of unusual value, Nancy soon discovers that strange and dangerous people are responsible for the theft. 
<br/><br/><label>ISBN: </label> $2.95 
<br/><br/><label>LCCN: </label>78057931  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mystery and detective stories.
<br/><br/><label>LC Class. No.: </label>PZ7.K23  / Nan no. 56 
<br/><br/><label>Dewey Class. No.: </label>[Fic]