Worlds of the wall
By: by C. C. MacApp.
Series: An Avon original -- V2308.
Publisher: Avon Books
Published: 1969
Place of publication: [New York
Language: eng
Number of pages: 222
Notes: "This Avon edition is the first publication of Worlds of the Wall in volume form.  A portion of this novel appeared in different form in Fantastic, c1964."