Jurgen Frey Books

Unternehmens Fitness Der Weg an die Spitze. 4 Cassetten.

By Jurgen Frey, Rolf Kummer, Jorg Knoblauch

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Das Schneiden und Stanzen von Kunststoffen und Gummi

By Wolfgang Seyderhelm

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Kinderlexikon von A Z

By Jurgen Frey, Ute Hummel, Kornelia Riedl

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From Abendstern to Zeichentrickfilm, from the astronaut to dinosaurs, this children's encyclopedia with approx. 1000 references and ill. gives easily understandable answers to the many questions of...

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.