John Shea Books

Describes the life and accomplishments of the United States Founding Father and third president, from his childhood in Virginia and his early political career to the drafting of the Declaration of...

Pirate

By John Shea, Ted Bell

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Spy

By John Shea, Ted Bell

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Warlord

By John Shea, Ted Bell

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Franklin D. Roosevelt in his own words

By John M. Shea

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Franklin D. Roosevelt was one of the most powerful and popular U.S. presidents. He was the only one to serve 12 years and was elected four times. As the leader of the nation, he saw the country thr...

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.

John Shea Books

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

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