Paul Christopher Books

...And Hell Followed With Him

By Paul Christopher

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Red Templar

By Paul Christopher

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The secrets of the Templars

By Paul Christopher

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Ex-army ranger turned historian John Holliday is in search for the truth behind the ancient and deadly Templar order. Putting their lives in danger, Holliday and his good friend Eddie once again tr...

The Lucifer gospel

By Paul Christopher

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The Sword Of The Templars

By N A

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The Templar cross

By Paul Christopher

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Retired Army Ranger John Holliday has reluctantly settled into his teaching position at West Point, when young Israeli archaeologist Rafi Wanounou comes to him with desperate news. Holliday's niece...

Michelangelo s Notebook

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The Lucifer Gospel Finn Ryan Conspiracy Thrillers

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Kicking Financial Ass

By Paul Christopher Dumont

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La Legende des Templiers tome 7 La vallee 7

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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.