Hetherington, Norriss S.,  1942- <br/><br/>
Planetary motions :  a historical perspective / 
Norriss Hetherington 
 - Westport, Conn. :  Greenwood Press,  2006 
 - xvi, 224 p. :  ill. ;  25 cm. 
 - Greenwood guides to great ideas in science .
<br/><br/>Includes bibliographical references (p. [201]-213) and index 
<br/><br/><label>ISBN: </label>031333241X (alk. paper)  RM221.65 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy--History<br/>Astronomy--Mathematics--History<br/>Planetology<br/>Science--History