Spencer, John <br/><br/>
Gifts of the gods ? :  are ufos alien visitors or psychic phenomena? / 
John Spencer 
 - London :  Virgin Publishing Ltd,  1994 
 - 349 p. (8 plates) :  ill. ;  18 cm. 
<br/><br/><label>ISBN: </label>0863698212 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Unidentifies flying objects<br/>Curiosities and wonders<br/>Mystery<br/>Human-alien encounters