Morrison, David,  1940- <br/><br/>
Frontiers of astronomy / 
David Morrison, Sidney C. Wolff. 
 - 2nd ed. 
 - Philadelphia :  Saunders College Pub.,  c1994. 
 - xv, 508 p. :  ill. (some col.), maps (some col.) . 
<br/><br/><label>ISBN: </label>003093933 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy.<br/>Astronomy--Study and teaching.