Peter Hoffmann Books

The Amphibians and Reptiles of Mount Kinabalu

By Rudolf Malkmus, J U Manthey

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Katalog der romischen Mosaike aus Trier und dem Umland

By Peter Hoffmann

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Hitler's Personal Security: Protecting the Fuhrer, 1921-1945

By Peter Hoffmann, Peter Hoffman

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Stralsund Kochbuch

By Katrin Hoffmann

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While the "Valkyrie" plot to kill Hitler is the best known instance of German oppositon to his dictatorship, there were many other significant acts of resistance. Behind Valkyrie collects the docum...

The Center of the Web (The Third Reich)

By Time Life Books

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The forever fuel

By Peter Hoffmann, Hoffmann Peter

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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.