Hard SF

From Author Wars - https://authorwars.com/books/hard-sf-2940442.html

Overview:

Title: Hard SF
Author: David N. Samuelson
Year: 2009
Type: Essays

Editions/Publications:

Unknown. The Routledge Companion to Science Fiction (Unknown, David N. Samuelson, Routledge, ISBN-10: 9780415453783, $170.00, xxii+554 pages, Hardcover, Non-fiction)