Sieb Posthuma Books

Mr. Coats
Mr. Coats

By David Colmer, Sieb Posthuma

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Where Is Rusty
Where Is Rusty

By Bill Nagelkerke, Sieb Posthuma

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Where Is Rusty
Where Is Rusty

By Bill Nagelkerke, Sieb Posthuma

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Where Is Rusty
Where Is Rusty

By Sieb Posthuma

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Where Is Rusty
Where Is Rusty

By Sieb Posthuma

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Rintje ruikt avontuur
Rintje ruikt avontuur

By Sieb Posthuma

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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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