Professor John Willis Books

Crickets
Crickets

By Professor John Willis

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Squirrels
Squirrels

By Professor John Willis

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Squirrels
Squirrels

By Professor John Willis

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Los Coyotes
Los Coyotes

By Professor John Willis

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Los Portaviones
Los Portaviones

By Professor John Willis

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Los Humvees
Los Humvees

By Professor John Willis

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Las Babosas
Las Babosas

By Professor John Willis

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La Pirana
La Pirana

By Professor John Willis

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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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