G. D. L. McGregor Books

Das Burenfreikorps von Deutsch-Sudwestafrika, 1914-1915

By G. D. L. McGregor

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Murder at Angra Pequena!

By Gordon McGregor

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The popular story told regarding the Confederate ship, the CSS Alabama and her involvement with the town named Luderitz, normally runs as follows: During the Civil War in America (1861-1865) the Co...

Die Eingeborenen Passmarken von Deutsch Sudwest Afrika

By G. D. L. McGregor

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1991 A P A Membership Register

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The history of the Iron Cross and Wound Badge in German South West Africa, 1914-1918

By G. D. L. McGregor, John Sharp

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German medals British soldiers and the Kalahari desert

By G. D. L. McGregor

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Das Burenfreikorps von Deutsch Sudwestafrika 1914 1915

By G. D. L. McGregor

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Police Supervisor As Communicator

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The first world war in Namibia

By G. D. L. McGregor

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Murder at Angra Pequena

By Gordon McGregor

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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.