James J. Kaufman Books

What to do before the money runs out

By James J. Kaufman

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The collectibles

By James J. Kaufman

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The story of two strong men from separate worlds--one touched by tragedy, the other by greed--brought together with unexpected results. Chronicling how their lives and those they touch are dramatic...

The collectibles

By James J. Kaufman

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The collectibles

By James J. Kaufman

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The Conciliators

By James J. Kaufman

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Concealers

By James J. Kaufman

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Concealers

By James J. Kaufman

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The Conciliators

By James J. Kaufman

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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.