Douglas Jackson Books

Avenger of Rome

By Douglas Jackson

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Sword of Rome

By Douglas Jackson

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The story I now commence is rich in vicissitudes, grim with warfare, torn by civil strife, a tale of horror even during times of peace". (Tacitus, The Histories AD 68). The Emperor Nero's erratic a...

Sword of Rome

By Douglas Jackson

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Enemy of Rome

By Douglas Jackson

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Set during the Year of the Four Emperors and telling of the bravery and the brutality of the Roman empire in the throes of civil war, the action-packed new novel from one of our finest historical n...

Enemy of Rome

By Douglas Jackson

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Saviour of Rome

By Douglas Jackson

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Glory of Rome Gaius Valerius Verrens

By Douglas Jackson

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Saviour of Rome Gaius Valerius Verrens 7

By Douglas Jackson

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Caligula

By Douglas Jackson

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"Rufus, a young slave, grows up far from the corruption of the imperial court. His master is a trainer of animals for the gladiatorial area, and Rufus discovers he has a natural talent for controll...

Claudius

By Douglas Jackson

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Emperor of Rome, Conqueror of Britain ... The year is 43 AD. In Southern England, Caractacus, war chief of the Britons, watches as the scarlet cloaks of the Roman legions spread across his lands li...

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.