Null Zone
From Author Wars - https://authorwars.com/books/null-zone-50568.html
Editions/Publications:
- Unknown. Analog Science Fiction -> Science Fact, July 1968 (Unknown, Joe Poyer, Condé Nast, $0.60, 180 pages, digest, MAGAZINE)
From Author Wars - https://authorwars.com/books/null-zone-50568.html