John C. Ryan Books

Seven Wonders
Seven Wonders

By John C. Ryan

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Life support
Life support

By John C. Ryan

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62 p. ; 22 cm

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State of the Northwest
State of the Northwest

By John C. Ryan

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Stuff
Stuff

By John C. Ryan, Alan Thein Durning

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Over our heads
Over our heads

By John C. Ryan

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State of the Northwest
State of the Northwest

By John C. Ryan

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The Broken Place
The Broken Place

By John C. Ryan

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Boy on a Dolphin
Boy on a Dolphin

By John C. Ryan

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Qi ge huan bao lu dian zi
Qi ge huan bao lu dian zi

By John C. Ryan

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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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