John Reilly Books

Twentieth-Century Crime and Mystery Writers

By John M. Reilly

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Tony Hillerman

By John M. Reilly

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Edgar Award-winning writer Tony Hillerman has earned a reputation as a Grand Master of the popular mystery. This is the first full-length examination of his work. One of the most successful contemp...

Larry McMurtry

By John M. Reilly

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Communication and Media Studies

By Geoffrey N. Gration, John Titford, John Reilly

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Communication and Media Studies

By G.N. Gration, John Titford, John Reilly, Geoff Gration

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United States Navy Destroyers of World War II

By John C. Reilly, John Reilly

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Agency relationships in real estate

By John W. Reilly

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Texas real estate agency

By John W. Reilly

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Exam Guide

By John Reilly, Paige Bovee Vitousek

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Texas real estate agency

By Donna K. Peeples

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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.