Thomas Ketelsen Books

Bohmen liegt am Meer

By Thomas Ketelsen

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Kunstlerviten, Inventare, Kataloge

By Thomas Ketelsen

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Im Zeichen des Bundes

By Staatliche Kunstsammlungen Dresden. Kupferstich Kabinett.

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Die Kunst des Mittelalters in Hamburg

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Artisten der Linie

By Thomas Ketelsen

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Around 200 works of renowned Dutch artists of the 16th and 17th Century, Hendrick Goltzius, Jacob van Ruisdael, Jan van Vliet Gillisz and last but not least, Rembrandt were presented together in sp...

Vom Licht gezeichnet

By Thomas Ketelsen

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Aus der Graphischen Sammlung

By Nuray Bakirsini, Thomas Ketelsen

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Vasari 500

By Thomas Ketelsen

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Tizian und Tintoretto in der Druckgrafik

By Verena Schraub, Thomas Ketelsen

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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.