Roy, Archie Edmiston <br/><br/>
Astronomy :  principles and practice / 
by Archie Edmiston Roy and David Clarke. 
 - Bristol :  A. Hilger,  1978. 
<br/><br/>Bibliografía: p. 332-333. 
<br/><br/><label>ISBN: </label>0-85274-292-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomía
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Texto