Lew Freedman Books

Juan Marichal

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"The pro football season of 1963 was dominated by the unexpected. In April, months prior to the beginning of play, it was revealed that two All-Star players, Paul Hornung and Alex Karras, were gamb...

Game of My Life Chicago White Sox

By Lew Freedman

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Game of My Life Cincinnati Reds

By Lew Freedman

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Clouds over the Goalpost

By Lew Freedman

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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.