Alexandra Kaar Books

Wirtschaft Krieg und Seelenheil

By Alexandra Kaar

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Wirtschaft Krieg und Seelenheil

By Alexandra Kaar

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The monograph deals with the embargo, which was imposed by the papacy and the Catholic lay powers upon all trade and commerce with the Czech Hussites between 1420 and 1436. The author explores this...

Historiker Zwischen Den Zeiten

By Petr Elbel, Capsk, Premysl Bar, Dusan Coufal

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Kaiser Sigismund

By Karel Hruza

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The present conference proceedings consist of 18 articles based on papers presented on 6th and 7th December 2007 at the international conference "Emperor Sigismund (?1437). Rulership in Practice, C...

Zwischen Feinden und Freunden

By Petr Elbel, Robert Novotny, Alexandra Kaar

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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.