Rolf Hermann Johannsen Books

Friedrich Loos

By Rolf Hermann Johannsen, Agnes Husslein Arco

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Ferdinand Georg Waldmuller

By Ferdinand Georg Waldmuller, Rolf Hermann Johannsen, Agnes Husslein Arco

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Say it with flowers!

By Rolf Hermann Johannsen, Rainald Franz, Stella Rollig

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"In this breathtaking book, richly illustrated chapters explore different artists' takes on floral paintings. Outstanding Viennese artists, from Ferdinand Georg Waldmuller to Gustav Klimt, tested t...

Spontan erfasst

By Rolf Hermann Johannsen, Claudia Denk, Stella Rollig

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Die Publikation zur gleichnamigen Ausstellung thematisiert die Entwicklung der Ölskizze vom frühen 19. bis zum Beginn des 20. Jahrhunderts. Die Faszination, die von der Ölskizze ausgeht, liegt im r...

The Belvedere companion guide

By Rolf Hermann Johannsen, Stephanie Auer, Stella Rollig, Maria Slater

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Karl Friedrich Schinkel

By Rolf Hermann Johannsen, Anna Marie Pfafflin, Hein Th Schulze Altcappenberg

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Say it with flowers

By Rolf Hermann Johannsen, Stella Rollig, Rainald Franz

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Friedrich Wilhelms IV. von Preussen

By Rolf Hermann Johannsen, Rolf H. Johannsen

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50 klassiker Gemalde

By Rolf Hermann Johannsen

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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.