T. William Skilling, Robert S. Richardson <br/><br/>
Astronomy / 
T. William Skilling, Robert S. Richardson 
 -  Henry Holt And Company New York 
 - 692 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>521  / SKIA