Ronan, Colin A. <br/><br/>
Practical astronomer 

 - New York  Macmillan  1981 
 - 205p. 
<br/><br/><label>ISBN: </label> USD 20.00 
<br/><br/><label>Source: </label> USD 20.00 
<br/><br/><label>Dewey Class. No.: </label>520 RON