John D. Clark Books

Worlds Apart
Worlds Apart

By John D. Clark

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Uller Uprising
Uller Uprising

By H. Beam Piper

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Marriage and divorce
Marriage and divorce

By John D. Clark

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Ignition
Ignition

By Isaac Asimov, John Drury Clark

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Ignition
Ignition

By Isaac Asimov, John Drury Clark

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Ignition
Ignition

By Isaac Asimov, John D. Clark

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Formosa
Formosa

By John D. Clark

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Worlds Apart
Worlds Apart

By John D. Clark

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Worlds Apart
Worlds Apart

By John D. Clark

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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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