John N. Heine Books

Mastering Advanced Diving
Mastering Advanced Diving

By John N. Heine

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Diving Dry Skills Booklet
Diving Dry Skills Booklet

By Naui

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Cold Water Diving
Cold Water Diving

By John N. Heine

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Cold Water Diving
Cold Water Diving

By John N. Heine

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Marine Dreams
Marine Dreams

By John Heine

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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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