Selfors, Suzanne <br/><br/>
The griffin's riddle 
Suzanne Selfors ; [Illustrated by Dan Santat] 
 - 221p.  ill.  20cm. 
<br/><br/> Summary: "Ten-year-olds Pearls and Ben, continuing their apprenticeships at Dr. Woo's Worm Hospital, discover that Dr. Woo and the sasquatch are both sick with Troll Tonsillitis, and they must travel to the Imaginary World to find the only cure: a gri 
<br/><br/><label>ISBN: </label>9780316286909 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Griffins--Fiction<br/>Imaginary creatures--Fiction<br/>Veterinarians--Fiction<br/>Apprentices--Fiction
<br/><br/><label>Dewey Class. No.: </label>823