Duffett-Smith, Peter. <br/><br/>
Practical astronomy with your calculator 
Peter Duffett-Smith. 
 - 2nd ed. 
 - Cambridge [Cambridgeshire]  New York  Cambridge University Press  1981. 
 - xvi, 188 p.  ill.  21 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>052124059X 0521284112 (pbk.) 
<br/><br/><label>LCCN: </label>81006191 //r86 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy--Problems, exercises, etc.<br/>Calculators
<br/><br/><label>LC Class. No.: </label>QB62.5  / .D83 1981 
<br/><br/><label>Dewey Class. No.: </label>522/.076