L. Jon Wertheim Books

Rookie Bookie

By L. Jon Wertheim, Tobias Moskowitz

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The rookie bookie

By L. Jon Wertheim

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"When seventh-grader Mitch Sloan moves to Jonasburg, Indiana, he uses his exceptional skills in math, money, and sports statistics to make friends--but gets in over his head when he starts a footba...

The rookie bookie

By L. Jon Wertheim

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The rookie bookie

By L. Jon Wertheim

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Glory Days

By L. Jon Wertheim

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Untitled on the Lost Music of the Holocaust

By L. Jon Wertheim, Katherine Davis

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Glory Days

By L. Jon Wertheim

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Running the table

By L. Jon Wertheim

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Blood in the Cage

By L. Jon Wertheim

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Strokes of Genius

By L. Jon Wertheim

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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.