Gerald R. Gems Books

Understanding American Sport

By Gertrud Pfister

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The athletic crusade

By Gerald R. Gems

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Before Jackie Robinson

By Gerald R. Gems

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"While the accomplishments and influence of Jack Johnson, Joe Louis, Jesse Owens, Jackie Robinson, and Muhammad Ali are doubtless impressive solely on their merits, these luminaries of the black sp...

Boxing

By Gerald R. Gems

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Windy city wars

By Gerald R. Gems

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For Pride Profit and Patriarchy

By Gerald R. Gems

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Sports in North America

By George B. Kirsch

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Sports in North America

By Gerald R. Gems

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Sports in North America A Documentary History Vol 3

By George B. Kirsch

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Sports in North America

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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.