Sean Duffy Books

Invasion 1169
Invasion 1169

By Sean Duffy, Peter Crooks

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Medieval Dublin XIV
Medieval Dublin XIV

By Sean Duffy

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Medieval Dublin XV
Medieval Dublin XV

By Sean Duffy

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Medieval Dublin XVIII
Medieval Dublin XVIII

By Sean Duffy

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Medieval Dublin XVIII
Medieval Dublin XVIII

By Sean Duffy

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Medieval Dublin XIX
Medieval Dublin XIX

By Sean Duffy

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Medieval Dublin XIX
Medieval Dublin XIX

By Sean Duffy

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Ireland in the Middle Ages
Ireland in the Middle Ages

By Sean Duffy

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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.

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