Jon Voelkel Books

The Jaguar Stones Book Three the River of No Return Jaguar Stones

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Middleworld

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When his archaeologist parents go missing in Central America, fourteen-year-old Max embarks on a wild adventure through the Mayan underworld in search of the legendary Jaguar Stones, which enabled...

Middleworld

By Pamela Voelkel, Jon Voelkel

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End of the World Club

By Pamela Voelkel, Jon Voelkel

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River of No Return

By Pamela Voelkel, Jon Voelkel

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End of the World Club

By Pamela Voelkel, Jon Voelkel

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Lost City

By Pamela Voelkel, Jon Voelkel

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River of No Return

By Pamela Voelkel, Jon Voelkel

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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.