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. 
 - Magic tree house ; 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>0590706357 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]