Petr Horacek Books

Jonathan Martha

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Two earthworms become tangled together and learn the joys of sharing.

One night on the farm everything is topsy-turvy and the moon will only smile when things are put right. It's time for him to light the stars, one by one. This deeply satisfying counting story twink...

Strawberries Are Red Walker Surprise

By Petr Horacek

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What Is Black and White Walker Surprise

By Petr Horacek

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This Little Cat

By Petr Horacek

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Hello Little Bird

By Petr Horacek

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Flip s Day Walker Surprise

By Petr Horacek

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When the moon smiled

By Petr Horacek

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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.