Alan Ereira Books

The Crusades

By Terry Jones, Alan Ereira, J. Sydney Jones, Terry Jones, Alan Ereira

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Nine hundred years ago Christian Europe was seized by a fever that changed the world. Inspired by a Pope who offered rewards on earth and a certain place in paradise thereafter, tens of thousands o...

The Heart Of The World

By Alan. Ereira

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The Heart of the World

By Alan Ereira

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THE CRUSADES

By ALAN EREIRA TERRY JONES, Terry Jones

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Terry Jones Medieval Lives

By Alan Ereira, Terry Jones

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Terry Jones' Barbarians: An Alternative Roman History

By Terry Jones, Alan Ereira, Ereira, Alan, Jones, Terry, 1942-

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An Alternative Roman HistoryAn entertaining rewriting of Roman history from the perspective of the “Barbarians” — who weren’t really barbaric at all!In this completely fresh approach to Roman histo...

The Elder Brothers

By Alan Ereira

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The Invergordon mutiny

By Alan Ereira

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The Nine Lives of John Ogilby

By Alan Ereira

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Crusades

By Terry Jones

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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.