Astronomy and planetary science 
 books 1, 2, 3, & 4 

 - London  Open University Press  1994 
 - 6vols. : ill. 
<br/><br/><label>ISBN: </label>0749251255 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Galaxies<br/>PLANETS<br/>TEXTBOOKS<br/>STARS<br/>COSMOLOGY
<br/><br/><label>LC Class. No.: </label>QB 147 Ope