Menzel, Donald H.  1901-1976. <br/><br/>
Flying saucers / 
Donald H. Menzel 
 - Cambridge :  Harvard University Press,  1953. 
 - xii, 319 p. :  illus. ;  21 cm. 
<br/><br/> "Notes" (p. [311]-313) 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Unidentified flying objects.
<br/><br/><label>Dewey Class. No.: </label>629.133  / MEF 1953