Richardson, Robert S. (Robert Shirley), 1902-  Richardson, Robert S. (Robert Shirley), 1902- <br/><br/>
Getting acquainted with comets, 
by Robert S. Richardson. 
 - [1st ed.] 
 - New York,  McGraw-Hill  [1967] 
<br/><br/><label>LCCN: </label>66024480 //r86 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comets.
<br/><br/><label>LC Class. No.: </label>QB721  / .R62 
<br/><br/><label>Dewey Class. No.: </label>523.6