Krogdahl, Wasley S. <br/><br/>
The Astronomical Universe 
An Introduction Text in College Astronomy 
 - New York  The MacMillan Company  1952 
 - 599 
<br/><br/><label>Subjects--Personal Names: </label> Astronomy 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy