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A Calculus of Angels is the second book in Gregory Keyes' The Age of Unreason series. It was initially published by Del Rey on March 30, 1999. A follow up to Newton's Cannon, the book is set in 1722 and continues the alternate history where Isaac Newton discovers that alchemy works, and a powerful science is built upon it.

Known ISBNs

  • ISBN 0330419986
  • ISBN 0345406087

1999 novels | Science fiction novels

 

This article is licensed under the GNU Free Documentation License. It uses material from the "A Calculus of Angels".

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