The Vertical Frontier
From Author Wars - https://authorwars.com/books/the-vertical-frontier-411881.html
Overview:
- Title: The Vertical Frontier
- Author: Kenneth Johns
- Year: 1961
- Type: Essays
Editions/Publications:
- Unknown. New Worlds Science Fiction, #104 March (Unknown, Kenneth Johns, Nova Publications Ltd., 2/6, 128 pages, digest, MAGAZINE)