J.Gray Books

Discovering English at the Low Intermediate Level
Why Mars and Venus Collide
Why Mars and Venus Collide

By John Gray

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How To Get What You Want And Want What You Have: A Practical and Spiritual Guide to Personal Success
Mars and Venus in Love Special
Mars and Venus in Love Special

By J. Gray

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Programming for the Apple
Programming for the Apple

By Gray John

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Formal Category Theory: Adjointness For 2-Categories
Paleolimnology
Paleolimnology

By J. Gray

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A letter on the disgraceful riot in the Catholic Church in Prescott on Sunday, Sept. 8th, 1867
Reconstructions of secondary education
Motoring Offences Handbook

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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.

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