Georg Peter Karn Books

Kulturdenkmaler in Rheinland-Pfalz, Bd.13 1, Kreis Bad Durkheim

By Rolf Mertzenich, Georg P Karn

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Das Mainzer Schloss

By Georg Peter Karn, Matthias Muller

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Mainzer Barock

By Meinrad Von Engelberg, Georg Peter Karn, Felicitas Janson

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"Mainz wird als Stadt des Barock - anders als Würzburg, Ludwigsburg oder Mannheim - nur von wenigen wahrgenommen, obwohl die ehemalige kurfürstliche Haupt- und Residenzstadt mit ihren Pfarr- und Kl...

St. Peter in Mainz

By Georg Peter Karn

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Die Projekte Filippo Juvarras fur den Duomo Nuovo in Turin

By Georg Peter Karn

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Kreis Bad Durkheim

By Georg Peter Karn, Ulrike Weber

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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.