Abell, George O. <br/><br/>
Exploration of the Universe 

 - Philadelphia:  Saunders College Publishing  1996 
 - 682p. :   il ;   30 cm. 
<br/><br/><label>ISBN: </label>0030345847 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomía Geodesia