Erwin Graf Books

Evolution
Evolution

By Erwin Graf

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Sinnesorgan Haut
Sinnesorgan Haut

By Erwin Graf

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Fische
Fische

By Erwin Graf

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Krankheit Krebs
Krankheit Krebs

By Erwin Graf

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Chemielabor. Rund ums Wasser.
Chemielabor. Rund ums Wasser.

By Erwin Graf

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Unsere Haut.
Unsere Haut.

By Erwin Graf

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Blut Kreislauf Herz.
Blut Kreislauf Herz.

By Tanja Buhler, Erwin Graf

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Das Immunsystem
Das Immunsystem

By Tanja Graf, Erwin Graf

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Alkohole
Alkohole

By Erwin Graf

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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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