Souls in the Great Machine

In the first volume of the Greatwinter trilogy, a librarian in post-apocalyptic Australia must recover a lost technology to save civilization.

The great Calculor of Libris was forced to watch as Overmayor Zarvora had four of its components lined up against a wall and shot for negligence. Thereafter, its calculations were free from errors, and that was just as well-for only this strangest of calcula...