Udo Weigelt Books

De vijf rovers Een Vier Windstreken prentenboek

By Udo Weigelt

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Wakker worden het is kerstmis Een Vier Windstreken prentenboek

By Udo Weigelt

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Bu shi wo

By Udo Weigelt

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Mouse learns about the dangers of jumping to conclusions when he and Ferret prematurely accuse Raven of stealing Ferret's raspberries.

Super Guinea Pig to the Rescue

By Udo Weigelt

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Ich wars nicht.

By Udo Weigelt, Julia Gukova

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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.