Gerhard Wietek Books

Karl Schmidt Rottluff

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The postcard, which is being gradually replaced today by electronic media, had a particular significance for Expressionist artists. The unique hand-painted, drawn or watercolour compositions were n...

Franz Radziwill, Wilhelm Niemeyer

By Gerhard Wietek

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Die Worpsweder Fotografien des Malers Georg Tappert von 1906-1909

By Georg Tappert

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200 Jahre Malerei im Oldenburger Land

By Wietek Gerhard

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Deutsche Kunstlerkolonien und Kunstlerorte

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Gemalte Kunstlerpost

By Gerhard Wietek

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Georg Tappert, 1880-1957

By Gerhard. Wietek

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Karl Schmidt-Rottluff in Hamburg und Schleswig-Holstein

By Gerhard Wietek

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Der Kreuzstall

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Begegnungen mit Kunst und Kunstlern

By Gerhard Wietek

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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.