Robert Grayson Books

Crime victim's aid
Crime victim's aid

By Robert Grayson

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John Cena
John Cena

By Robert Grayson

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The Biggest Loser Major Competitive Reality Shows Library
John Cena by Robert Grayson 2009 Paperback Reprint
SWAT teams
SWAT teams

By Robert Grayson

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"Describes SWAT teams operating in the United States, including their history, gear, weapons, training, and missions"--

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Essential Library of American Wars
Exploring space
Exploring space

By Robert Grayson

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Civil War Spies Essential Library of the Civil War
U. S. Civil War
U. S. Civil War

By Robert Grayson

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The U.S. Civil War
The U.S. Civil War

By Robert Grayson

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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.

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