Roger Duvoisin Books

Petunia, Beware!
Petunia, Beware!

By Roger Duvoisin

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Petunia's Christmas.
Petunia's Christmas.

By Roger Duvoisin

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Marc and Pixie
Marc and Pixie

By Louise Fatio, Roger Duvoisin

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House of the Four Seasons
House of the Four Seasons

By Roger Duvoisin

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House of the Four Seasons
House of the Four Seasons

By Roger Duvoisin

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Petunia takes a trip
Petunia takes a trip

By Roger Duvoisin

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Petunia
Petunia

By Roger Duvoisin

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Petunia's Christmas
Petunia's Christmas

By Roger Duvoisin

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A. for Ark
A. for Ark

By Roger Duvoisin

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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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