John Connelley Books

Let s Colour

By John Connelley

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From enemy to brother

By John Connelley

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Examines the silence of the Catholic Church during the Holocaust and explores the process of theological change, from the speechless Vatican to those Catholics who endeavored to find a new language...

Dying Out Here Is Not An Option

By John Connelley

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How To Take Great Notes Quickly And Easily

By John Connelley

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How to Improve Your Memory and Remember Anything

By John Connelley

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Beyond Kuiper

By Matthew Medney, Stefan Petrucha, John Connelley, Utku Ozden

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Juden Vom Feind zum Bruder

By John Connelley

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Universities under Dictatorship

By Michael Gruttner, John Connelley

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Let s Play a Game with Charlie

By John Connelley

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From Peoples into Nations

By John Connelley

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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.