Heather Couper Books

Mars
Mars

By Heather Couper, Nigel Henbest

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How the universe works
How the universe works

By Heather Couper

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Black Holes
Black Holes

By Couper Heather Henbest Nigel

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Space encyclopedia
Space encyclopedia

By Heather Couper

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Is anybody out there?
Is anybody out there?

By Heather Couper

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Universe
Universe

By Heather Couper, Nigel Henbest

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J.R.R. Tolkien
J.R.R. Tolkien

By Michael Coren

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Universe
Universe

By Heather Couper, Nigel Henbest

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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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