William J. Cooper Books

Jefferson Davis and the Civil War Era

By William J. Cooper

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We Have the War Upon Us

By William J. Cooper

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In this carefully researched book William J. Cooper gives us a fresh perspective on the period between Abraham Lincoln’s election in November 1860 and the firing on Fort Sumter in April 1861,...

Lost Founding Father

By William J. Cooper

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Lost Founding Father

By William J. Cooper

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Liberty and Slavery

By William J. Cooper, Cooper William J. Jr.

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Writing the Civil War

By James M. McPherson, William J. Cooper, Cooper William J. Jr.

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Reaction rates and mechanisms of advanced oxidation processes AOP for water reuse

By William J. Cooper

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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.