Whipple, Fred L <br/><br/>
The nystery of comets / 
Fred L. Whipple [and ] asst. by Daniel w. E Green 
 - London :  Cambridge University Press,  c1985 
 - x, 276 p. ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0521324408 :  PND 12.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comets<br/>Meteors
<br/><br/><label>Dewey Class. No.: </label>523.6