John Duncklee Books

Coyotes I have known

By John Duncklee

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Quest for the eagle feather

By John Duncklee

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Quiet Water, a white boy who was adopted by Indians, is finally accepted by the tribal elders when he and his two friends fulfill their coming-into-manhood journey and climb the Sacred Mountain to...

Disowned

By John Duncklee

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Tales from Clouds and Sea

By John Duncklee

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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.