Rudolf Koch Books

Die Asseburg
Die Asseburg

By Rudolf Koch

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The Book of Signs
The Book of Signs

By Rudolf Koch

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Book of Signs
Book of Signs

By Rudolf Koch

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Christian Symbols
Christian Symbols

By Rudolf Koch

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The Book of Signs
The Book of Signs

By Rudolf Koch, Vyvyan Holland

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Gemalde, Grafik
Gemalde, Grafik

By Rudolf Koch

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Im Hinterhof des Krieges
Im Hinterhof des Krieges

By Rudolf Koch

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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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