William Marvel Books

Southwest Virginia in the Civil War

By William Maravel, William Marvel

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Military Order of the Loyal Legion of the United States

By William Marvel

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Five Flags Over Fort Sumter Civil War Series

By William Marvel

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Tarnished Victory

By William Marvel

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Tarnished victory

By William Marvel

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In the course of 1865 the war grows ever more deadly, the home front is stripped to fill the armies, and the economy is crippled by debt and inflation, while the stubborn survival of the Confederac...

Great Task Remaining

By William Marvel

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Lincoln s Darkest Year

By William Marvel

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Mr. Lincoln Goes to War

By William Marvel

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Mr. Lincoln Goes to War

By William Marvel

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Confederate Resurgence Of 1864

By T. Michael Parrish, William Marvel

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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.