Geoff Martz Books

PR Cracing the Act CD ROM 97 98

By Geoff Martz

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PR GMAT 1992

By Adam Robinson

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PR GMAT 1993

By Adam Robinson

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Princeton Review How To Survive Without Your Parents Money

By Geoff Martz, John Katzman

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PR GMAT 1994

By Adam Robinson

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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.