Osborne, Mary Pope. <br/><br/>
Dolphins at Daybreak - Magic Tree House #9 / 
by Mary Pope Osborne ; illustrated by Sal Murdocca. 
 - New York :  Random,  1997. 
 - 67 p. :  ill. ;  20 cm. 
 - Magic Tree House Series  #9 A First stepping stone book .
<br/><br/> Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle. 
<br/><br/> 3.1.  6-9.  1-5.  350  Lexile 
<br/><br/><label>ISBN: </label>067988338X (pbk.) 0679983384 
<br/><br/><label>LCCN: </label>96030943 /AC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine animals--Fiction.<br/>Submarines--Fiction.<br/>Riddles--Fiction.<br/>Magic--Fiction.<br/>Tree houses--Fiction.
<br/><br/><label>Dewey Class. No.: </label>Fic