Cornelia Ludecke Books

Carl Ritters Lehrtatigkeit an der Allgemeinen Kriegsschule in Berlin (1820-1853)

By Cornelia Ludecke

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From Beaufort to Bjerknes and beyond

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Auf Entdeckungsreise in die Antarktis

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Germans in the Antarctic

By Cornelia Ludecke

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The History of the International Polar Years Ipys From Pole to Pole

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Although international scientific cooperation - particularly in meteorology - was established previous to the first International Polar Year, the IPY-1 (1882-83) is considered to be the first revol...

Third Reich in Antarctica

By Cornelia Ludecke, Colin Summerhayes

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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.