David Nicolle Books

While Scandinavia's 'Viking Age' is one of the most studied aspects of early medieval history, much less has been published about the centuries that followed. Yet the armies of Sweden, Norway and D...

Medieval Scandinavian Armies (2): 1300–1500 (Men-At-Arms)

By David Nicolle, David Lindholm

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While Scandinavia's 'Viking Age' is one of the most studied aspects of early medieval history, much less has been published about the centuries which followed. Yet the armies of Sweden, Norway and...

The Normans

By Christopher Gravett

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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.