Hard SF
From Author Wars - https://authorwars.com/books/hard-sf-1370292.html
Overview:
- Title: Hard SF
- Author: Franz Rottensteiner
- Year: 1975
- Type: Essays
Editions/Publications:
- Unknown. The Science Fiction Book: An Illustrated History (Unknown, Franz Rottensteiner, New American Library, $6.95, 160 pages, Trade Paperback, Non-fiction)