Ultimatumbra
From Author Wars - https://authorwars.com/books/ultimatumbra-1082787.html
Overview:
- Title: Ultimatumbra
- Author: Michael G. Coney
- Year: 1969
- Type: Short Fiction
Editions/Publications:
- Unknown. Vector 52 Winter / Spring 1969 (Unknown, Michael G. Coney, BSFA, 36 pages, quarto, MAGAZINE)