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by J. Gregory KeyesHardcover details (USA). details (UK). details (Germany). details (Canada). ISBN: 978-0-7394-0260-3 ISBN-10: 0-7394-0260-9 |
| See also: | ||
| 2000 | Mass Market Paperback | A Calculus of Angels (The Age of Unreason, Book 2) |
| 1999 | Paperback | A Calculus of Angels (The Age of Unreason, Book 2) |