Matthias Harder Books

In 2006, Vera Mercer (b. Berlin, 1936; lives and works in Omaha, Nebraska, and Paris) started taking photographs of ravishing still lifes with sumptuous flower arrangements, freshly shot game, and...

Moritz Partenheimer

By Moritz Partenheimer

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Lost Angeles

By Michael Dressel, Matthias Harder, F. Scott Hess

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Herbert List

By Matthias Harder, Max Scheler

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Walter Hege und Herbert List.

By Matthias Harder

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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.