John Cid Books

Poem of the Cid
Poem of the Cid

By John Ormsby, John Cid

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Poem of the Cid
Poem of the Cid

By John Ormsby, John Cid

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How to Live As a Freelancer
How to Live As a Freelancer

By John Cid

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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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