Cohen, Daniel,  1936- <br/><br/>
The world of UFOs / 
Daniel Cohen. 
 - Philadelphia :  Lippincott,  1978. 
 - 160 p. :  ill ;  21 cm. 
<br/><br/>Bibliography: p. 154-156 
<br/><br/> A history of unidentified flying objects including accounts of several famous sightings and results of federal investigations. 
<br/><br/><label>ISBN: </label>0-397-31780-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Unidentified flying objects--Juvenile literature<br/>Unidentified flying objects.