Opera Books

84 Opernhäuser gibt es in der Bundesrepublik Deutschland, allein 13 davon in der Region zwischen Aachen und Detmold, Bonn und Bielefeld - damit besitzt Nordrhein-Westfalen die dichteste Opernlandsc...

The ultimate opera quiz book

By Kenn Harris

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Hanns Eisler

By Ulrich Tadday, Thomas Phelps

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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.

Opera Books

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

What is an EAN and How Does it Relate to an ISBN?