UFO's--a scientific debate / 
edited by Carl Sagan and Thornton Page 
 - London :  Cornell University Press,  1973 
 - xxxi, 310 p. ;  23 cm. 
<br/><br/> Papers presented at a symposium sponsored by the American Association for the Advancement of Science, held in Boston on Dec. 26-27, 1969. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0801407400 :  USD 12.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Unidentified flying objects--Congresses
<br/><br/><label>Dewey Class. No.: </label>001.94