Paul Doherty Books

The spies of Sobeck

By P. C. Doherty

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Amerotke is marked for death by a Nubian sect, and a former chief spy is found murdered.

The Templar Templars 1

By P. C. Doherty

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The darkening glass

By P. C. Doherty

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March 1312 and England is divided and Mathilde of Westminster senses a challenge to the throne and rebel Robert Bruce prowls the Scottish border seeking an advancement. The King and Queen are force...

The darkening glass

By P. C. Doherty

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The darkening glass

By P. C. Doherty

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The darkening glass

By P. C. Doherty

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Mysterium

By Paul Doherty

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The Templar Magician

By Paul Doherty

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Roseblood

By P. C. Doherty

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When Simon Roseblood is summoned by Amadeus Sevigny to stand trial for a crime he knows he didn't commit, their paths cross in ways that alter them both forever. And as the Wars of the Roses looms,...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.