Catherine Gudis Books

Buyways

By Catherine Gudis

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Ray Johnson

By Catherine Gudis, Johnson Ray, Donna De Salvo

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"Both this book and the exhibition it complements explore the wide range of Johnson's artistic production, including his early abstractions and graphic design broadsides of the 1950s, New York Corr...

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By Catherine Gudis

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Buyways

By Catherine Gudis

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Helter Skelter

By Catherine Gudis

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By Catherine Gudis

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Buyways

By Catherine Gudis

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Buyways

By Catherine Gudis

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Buyways

By Catherine Gudis

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Buyways

By Catherine Gudis

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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.