Beyond the barrier.

Bibliographic Details
Main Author: Knight, Damon, 1922-2002
Format: Book
Published: Garden City, N. Y. : Doubleday, [1964]
Edition:[1st ed.].
Item Description:"A shorter version of this novel was published in the Magazine of fantasy and science fiction under the title 'The tree of time'."
Physical Description:188 pages : 22 cm.