Whipple, Fred Lawrence,  1906- <br/><br/>
Earth, moon, and planets / 
Fred L. Whipple 
 - rev. ed. 
 - Cambridge, Mass. :  Harvard University Press,  1963 
 - viii, 278 p. :  ill. ;  25 cm. 
 - The Harvard books on astronomy .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Moon