David Jefferis Books

The moon
The moon

By David Jefferis

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Mars
Mars

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The sun
The sun

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Gas giants
Gas giants

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Hot planets
Hot planets

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Mighty megaplanets
Mighty megaplanets

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The Earth
The Earth

By David Jefferis

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The moon
The moon

By David Jefferis

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Mars
Mars

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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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