Paul L. Williams Books

The Complete Idiot's Guide to the Lives of the Saints

By Paul L. Williams

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The Complete Idiot's Guide(R) to the Crusades

By Paul L. Williams, Paul Williams

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Vida y obra de los santos

By Paul L. Williams, Paul Williams

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Al Qaeda: Brotherhood of Terror

By Paul L. Williams

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This book explores the history of Islam and the cultural, political, and socio-economic forces that have cultivated an environment that nurtures terrorism and idolizes its leaders. "On September 1...

1994 NAEP reading A first look

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NAEP 1994 U.S. history A first look

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Everything You Always Wanted to Know about the Catholic Church but Were Afraid to Ask

By Paul L. Williams

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House Plants

By Paul L. Williams

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The moral philosophy of Peter Abelard.

By Paul L. Williams

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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.