Ruth Kaiser Books

Deutsche Graphik des Klassizismus und der Romantik

By Ursula Peters, Ruth Kaiser, Antje Zimmermann, Von Der Heydt Museum., Sabine Fehlemann

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Schloss Rheydt und andere Orte

By Ruth Kaiser, Christiane Zangs

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Metakognition. Denken und Problemlosen optimieren.

By Ruth Kaiser, Armin Kaiser

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Studienbuch Padagogik. Grund und Prufungswissen.

By Ruth Kaiser, Arnim Kaiser

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Metakognitiv Fundierte Bildungsarbeit

By Reinhard Hohmann, Ruth Kaiser, Arnim Kaiser

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This unique book, which grew out of the popular website Spontaneous Smiley, will appeal to kids and adults. Who can resist the wacky, cute smiley faces to be spied in photos of colorful found objec...

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.