Leonard Fullenkamp Books

One of the bloodiest and most bitterly fought battles of the Civil War took place at Shiloh Church (and Pittsburg Landing) on April 6-7, 1862. The Union, led by Ulysses S. Grant and William Tecumse...

Guide to the Vicksburg Campaign

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Guide to the Vicksburg Campaign

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Guide to the Battle of Gettysburg

By Jay Luvaas, Harold W. Nelson, Leonard Fullenkamp, Steven Stanley

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Guide to the Battle of Gettysburg

By Jay Luvaas, Harold W. Nelson, Leonard Fullenkamp, Steven Stanley

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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.