Dennis Hormuth Books

Livonia est omnis divisa in partes tres

By Dennis Hormuth

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Norden und Nordlichkeit

By Maike Schmidt, Dennis Hormuth

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Universitatsmatrikeln

By Dennis Hormuth

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Livonia Est Omnis Divisa in Partes Tres

By Dennis Hormuth

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Die Hamburgisch Lubischen Pfundgeldlisten 1485 1486

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These two so-called "Pfundgeldlisten" are part of an eight-volume series. They record the income of a customs duty which was imposed to cover the costs of equipping peace ships and which was levied...

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.