William E. Butterworth III Books

When Jim Cronley hears he's just won the Legion of Merit, he figures there's another shoe to drop, and it's a big one: he's out as Chief, DCI-Europe. His new assignments couldn't be bigger: protect...

The Attack

By William E. Butterworth IV, William E. Butterworth III

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The Enemy of My Enemy

By William E. Butterworth IV, William E. Butterworth III

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Careers in the services

By William E. Butterworth III

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Discusses careers and education programs in all branches of the armed forces. Covers career fields, training, promotions, and commissions.

Black gold

By William E. Butterworth III

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Traces the history of oil from its use by the ancient Sumerians through the present energy crisis, with emphasis on the men who fought for control of the oil industry.

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.