Doug TenNapel Books

Cardboard

By Doug TenNapel

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Cardboard

By Doug TenNapel

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Nnewts

By Doug TenNapel

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A little hero faces big challenges in the first book of this totally unique fantasy-dventure series. The first book in the Nnewts series follows the story of Herk, a lovable Nnewt who longs for str...

The Rise of Herk

By Doug TenNapel

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The Battle for Amphibopolis

By Doug TenNapel

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The Battle for Amphibopolis Nnewts 3

By Doug TenNapel

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Bad Island

By Doug Tennapel

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Escape From The Lizzarks

By Doug TenNapel

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Wisenheimer Wednesday Strange Kid Chronicles

By Doug TenNapel, Mike Koelsch

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Nnewts

By Doug TenNapel

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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.