Duncan Harding Books

Torpedo boat

By Duncan Harding

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Operation Judgment

By Duncan Harding

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Massacre at Jutland

By Duncan Harding

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British naval midshipmen de Vere Smith and "Dickie" Bird spy on the German Navy, narrowly escaping death but learning enough about the German plans to help defend the British navy at the Battle of...

Assault on the Rock

By Duncan Harding

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Spain 1939. The Civil War is ending. The defeated Republican forces retreat to France, pursued by the Fascist fleet. Hot-headed Catalan Angles Cusi, though, makes a desperate attempt against the De...

Torpedo boat

By Duncan Harding

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A novel based on fact - an amazing story of daring and endurance. The slaughter of World War I was over, more deadly war was beginning. In 1919 four British sailors were given orders to enter Petro...

Operation Judgement

By Duncan Harding

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Summer 1939. The head of the British Fleet is confident that Mussolini will join Hitler when Germany goes to war. He hits on a bold plan--codenamed Operation Judgement--to destroy the Italiian flee...

Ramsey Campbell

By Duncan Harding

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Assault on St Nazaire

By Duncan Harding

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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.