Joe J. Heydecker Books

Ein Mann mit Eigenschaften

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Joe J. Heydecker wurde durch seine Fotos des Warschauer Gettos und sein Buch über den Nürnberger Prozess bekannt. Als er mit 16 Jahren während seiner Fotografenausbildung sein erstes Buch schrieb,...

The Nuremberg trial

By Joe J. Heydecker

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The Warsaw Ghetto

By Joe J. Heydecker

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Das Warschauer Getto

By Joe J. Heydecker

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Das Warschauer Ghetto.

By Joe J. Heydecker

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Bilanz der tausend Jahre

By Joe J. Heydecker

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Der Nurnberger Prozess

By Johannes Leeb, Joe J. Heydecker

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Der Nurnberger Prozess

By Joe J. Heydecker

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Die Schwestern der Venus

By Joe J. Heydecker

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Proces w Norymberdze

By Joe Julius Heydecker

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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.