Ingo Kohler Books

"This study uses the example of the private banking sector to examine the process of Aryanization - the sale, usually under duress, of Jewish-owned businesses to non-Jews, typically at reduced pric...

Aryanization of Private Banks in the Third Reich

By Ingo Kohler

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Consumer Engineering 1920s 1970s

By Ingo Kohler, Jan Logemann, Gary Cross

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Auto Identitaten

By Ingo Kohler

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Varieties of Family Business

By Hartmut Berghoff, Ingo Kohler

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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.