Volkmar Rohrig Books

Fünf Geschichten von Kindern und Ponys: "Verkaufe Pony mit Schwein", steht in der Zeitung. Und Isabell wünscht sich doch so sehr ein Pony! Doch ein Schwein, nein, das kann sich die Familie nicht vo...

Benny und der Weihnachtszauber. Ab 4 J. .

By Volkmar Rohrig, Hans Gunther Dohring

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Biggis No. 1. Mit Adressen der regionalen AIDS Hilfen. Ab 14 J. .

By Volkmar Rohrig

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Biggi. Liebe auf den zweiten Blick.

By Volkmar Rohrig

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Letzte Ausfahrt Paradies.

By Volkmar Rohrig

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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.