Osborne, Mary Pope. <br/><br/>
Dolphins at daybreak  
by Mary Pope Osborne ; illustrated by Sal Murdocca. 
 - New York :  Random House,  c1997. 
 - 67 p. :  ill. ;  20 cm. 
 - The magic tree house series ;  #9 .
 - Osborne, Mary Pope.  Magic tree house series ;  #9. .
<br/><br/> "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/><label>ISBN: </label>067988338X  3.99 0679983384 (glb) 
<br/><br/><label>LCCN: </label>96030943 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine animals--Fiction.<br/>Submarines (Ships)--Fiction.<br/>Riddles--Fiction.<br/>Magic--Fiction.<br/>Tree houses--Fiction.
<br/><br/><label>LC Class. No.: </label>PZ7.O81167  / Do 1997 
<br/><br/><label>Dewey Class. No.: </label>[Fic]