Hans Wilhelm Books

Happy Easter, Little Critter (Little Critter)

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An eggs-tra special, egg-citing tale featuring the beloved Little Critter! Mercer Mayer’s Little Critter is celebrating Easter in this classic, funny, and heartwarming book. Whether he’s dyeing egg...

Chinese Horoscopes

By Hans Wilhelm

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Hans Wilhelm's Fun Signs

By Hans Wilhelm

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I'll Always Love You

By Hans Wilhelm

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I'll always love you

By Hans Wilhelm

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Let's be friends again!

By Hans Wilhelm

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Let's be friends again!

By Hans Wilhelm

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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.