A Calculus of Angels
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Overview:
- Title: A Calculus of Angels
- Author: Greg Keyes
- Year: 1999
- Type: Novels
- Series: Age of Unreason
- Number in Series: 2
Variant Titles:
Editions/Publications:
- Unknown. A Calculus of Angels (Unknown, Greg Keyes, Tor / Pan Macmillan UK, ISBN-10: 0330419986, £6.99, 429 pages, Paperback, Novel)
- 2015 . A Calculus of Angels (2015, Greg Keyes, Open Road Integrated Media, ISBN-10: 9781504026574, $7.99, pages, ebook, Novel)
- 2017 . The Age of Unreason (2017, Greg Keyes, Open Road Integrated Media, ISBN-10: 9781504049634, $31.99, ebook, Omnibus)
- 2021 . A Calculus of Angels (2021, Greg Keyes, Open Road Integrated Media, ISBN-10: 9781504068611, $26.99, 344 pages, Trade Paperback, Novel)