Knight, Damon <br/><br/>
Beyond the barrier / 
Damon Knight 
 - Garden City, N.Y. :  Doubleday,  1964 
 - 188 p. ;  22 cm. 
<br/><br/> 'A shorter version of this novel was published in the Magazine of fantasy and science fiction under the title'the tree of time'.' 
<br/><br/><label>LCCN: </label>64-010559 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vietnamese Conflict, 1961-1975--Fiction