X Stands for Unknown
From Author Wars - https://authorwars.com/books/x-stands-for-unknown-690449.html
Overview:
- Title: X Stands for Unknown
- Author: Isaac Asimov
- Year: 1984
- Type: Non-fiction
- Series: F&SF Essay Collections
Variant Titles:
Editions/Publications:
- Unknown. X Stands for Unknown (Unknown, Isaac Asimov, Discus / Avon, ISBN-10: 0380698471, $3.95, 218 pages, Paperback, Non-fiction)
- 1984 . X Stands for Unknown (1984, Isaac Asimov, Doubleday, ISBN-10: 038518915X, $13.95, 218 pages, Hardcover, Non-fiction)