Roger Freeman Books

Zemke s Wolf Pack

By Roger Freeman

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B 17: Flying Fortress

By Roger Freeman, Roger A. Freeman

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Thunderbolt

By Roger Freeman

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Reconstructs seventeen days in the life of Thomas Jefferson during which the Declaration of Independence was written and edited. Includes reproductions of original manuscripts showing revisions and...

Thunderbolt

By Roger Freeman

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B 24 Liberator at War

By Roger Freeman, Roger A. Freeman

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Infection in Cardiothoracic Intensive Care

By Roger Freeman, Frances Kate Gould

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A Fair Deal for Water

By Roger Freeman

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Professional practice

By Roger Freeman

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Avenues of Spiritual Consciousness

By Roger Freeman

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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.