SIGMA: Summing Up Speculation
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Overview:
- Title: SIGMA: Summing Up Speculation
- Author: Arlan Andrews, Sr.
- Year: 2012
- Type: Essays
- Series: Science Fact (Analog)
Editions/Publications:
- Unknown. Analog Science Fiction and Fact, September 2012 (Unknown, Arlan Andrews, Sr., Dell Magazines, $4.99, 116 pages, digest, MAGAZINE)