Keith Hedger Books

SIGMA
SIGMA

By Keith Hedger, David Kent

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Sigma 2
Sigma 2

By Keith Hedger, David Kent

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Sigma 1
Sigma 1

By Keith Hedger, David Kent

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SIGMA
SIGMA

By Keith Hedger, D. Burghes, David Kent, D. Steward

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Numbers game
Numbers game

By Keith Hedger

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Numbers game
Numbers game

By Keith Hedger

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Easy Jobs
Easy Jobs

By Jenny Teague, Keith Hedger, Krystal Cruz

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Moving Target
Moving Target

By Keith Hedger

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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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