John Shelley Books

Inn trouble
Inn trouble

By Jane B. Mason

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Bella helps her parents turn a dilapidated old house into a beautiful bed and breakfast.

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Computer studies
Computer studies

By John Shelley

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Computer Studies Keyfacts
Computer Studies Keyfacts

By John Shelley

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XHTML and CSS Explained
XHTML and CSS Explained

By John Shelley

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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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