book cover of Invisible Barriers

Invisible Barriers

(1958)
A novel by

 
 
First published in 1958 under the pseudonym David Osborne, Invisible Barriers is an expansion of the short story "And the Walls Came Tumbling Down" (1957), which was published under the author's own name.



Used availability for Robert Silverberg's Invisible Barriers

Kindle Editions

August 2013 : UK Kindle edition
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Title: Invisible Barriers
Author(s): Robert Silverberg
Publisher: Gateway
Availability: Amazon UK