Hopf, Alice Lightner <br/><br/>
Gods or demons? 
/ A. M. Lightner. 
 - New York  Four Winds Press  [1973] 
 - 208 p. 
<br/><br/> When his time machine is accidentally activated, Eli, his brother Tom, and their friend Sadie find themselves transported back thousands of years to a prehistoric time where they discover three races of men. 
<br/><br/><label>LCCN: </label>73081172 /AC 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science fiction
<br/><br/><label>LC Class. No.: </label>PZ7.H7728  / Go 
<br/><br/><label>Dewey Class. No.: </label>[Fic]