Katrin Grothusen Books

News from Moses the Guinea Pig

By Katrin Grothusen

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Ich mach Winterschlaf mit dir

By Katrin Grothusen, Dorothea Ackroyd

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Hasen oder Huhner Das grosse Eierduell. Ab 4 J. .

By Dorothea Ackroyd, Katrin Grothusen

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Ich mach Winterschlaf mit dir. Ab 3 J. .

By Dorothea Ackroyd, Katrin Grothusen

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Wir wollen auch zur Feuerwehr Ab 3 J. .

By Dorothea Ackroyd, Katrin Grothusen

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Paddi Bär mag's lieber gemütlich, während Torro so richtig Gas gibt, wenn er wütend ist. Und Babette kommt langsam aber sicher dem Geheimnis der Zunge auf die Spur! - Fünf erfolgreiche Bilderbuch-G...

Wie das Gluck ins Kasebrotchen kam. Ab 6 J. .

By Dorothea Tust, Katrin Grothusen

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Tout un hiver avec toi

By Dorothea Ackroyd, Katrin Grothusen

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Wach auf Boris es ist Weihnachten.

By Dorothea Ackroyd, Jutta Langreuter

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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.