Hubert Wolf Books

Inquisition und Buchzensur im Zeitalter der Aufklarung

By Hubert Wolf

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Die Reichskirchenpolitik des Hauses Lothringen (1680-1715)

By Hubert Wolf

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Zensur Abweichender Meinungen Durch Kirche Und Staat

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The Nuns of Sant' Ambrogio: The True Story of a Convent in Scandal

By Hubert Wolf

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In rich detail, Wolf presents astonishing findings from the recently opened Vatican archives--discoveries that clarify the relations between National Socialism and the Vatican. He illuminates the t...

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.