John F. Marszalek Books

Sherman: A Soldier'S Passion For Order

By Marszalek John F, John F. Marszalek, John Marszalek

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Encyclopedia of African-American Civil Rights: From Emancipation to the Present

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The Greenwood Encyclopedia of African American Civil Rights

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American Political History

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Commander of All Lincoln's Armies: A Life of General Henry W. Halleck

By John F. Marszalek

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"In the summer of 1862, President Lincoln called General Henry W. Halleck to Washington, D.C., to take command of all Union armies in the death struggle against the Confederacy. For the next two tu...

Sherman

By John F. Marszalek

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Court-martial

By John F. Marszalek

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Petticoat affair

By John F. Marszalek

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Lincoln and the Military

By John F. Marszalek

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Sherman

By John F. Marszalek

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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.