Earth, sea and sky 

 - Cambridge :  Cambridge University Press,  1984 
 - 64 p. :  ill. ;  30 cm. 
 - Cambridge science universe  v. 7 .
<br/><br/><label>ISBN: </label>0521260035 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth--Juvenile literature