Osborne, Mary Pope. <br/><br/>
Magic tree house :  Books 38 & 39 /  [sound recording] 
Mary Pope Osborne. 
 - New York :  Listening Library,  2008. 
 - 2 sound discs (2 hrs, 35 mins.)  digital ;  4 3/4 in. 
 - Magic Tree House. .
<br/><br/> Includes 2 "Magic Tree House" books #38 & 39. 
<br/><br/>Monday with a mad genius -- Dark day in the deep sea. 
<br/><br/>Read by Mary Pope Osborne. 
<br/><br/><label>ISBN: </label>9780739363942 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audiobooks.