George Worthington Books

U. S. Naval Special Warfare - U. S. Navy SEALs

By George Worthington, Tom Hawkins, Greg Edward Mathieson, Donald Winter

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A one of a kind, exclusive coffee table top book showing the history of U.S. Naval Special Warfare and the U.S. Navy SEALs. From the early days of the OSS to todays war on global terrorism

None Shall Sleep till Journey's End

By George Worthington, Cherry Gray, Samuel Gray

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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.