Gallant, Roy A. <br/><br/>
The Planets: Exploring the Solar system 

 - 
 - New York  Macmillan/McGraw-Hill School Publishing Company  1989 
 - 176 
<br/><br/><label>ISBN: </label>002274973X 
<br/><br/><label>Dewey Class. No.: </label>C 532.2 G12p 1989