Oliver Hilmes Books

Witwe im Wahn

By Oliver Hilmes

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Ludwig II

By Oliver Hilmes

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Berlin 1936

By Oliver Hilmes

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Die Diktatur im Pausenmodus: Stadt und Spiele im Sommer 1936 Im Sommer 1936 steht Berlin ganz im Zeichen der Olympischen Spiele. Zehntausende strömen in die deutsche Hauptstadt, die die Nationalsoz...

Bolin 1936

By Oliver Hilmes

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Berlin 1936

By Oliver Hilmes

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Vivid first-hand accounts bring to life Adolf Hitler’s 1936 Olympics—the most controversial Games ever staged—in this epic sports history “masterpiece” (Telegraph).A B...

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.