John Powell Books

It's brightening up, Johnny
It's brightening up, Johnny

By John Powell

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CO2 Laser Cutting
CO2 Laser Cutting

By John Powell

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CO2 Laser Cutting explains and describes how engineering materials are cut using a CO2 laser. Information is given on the cutting of metals and non metals on a wide range of levels from practical a...

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Co2 Laser Cutting
Co2 Laser Cutting

By John Powell

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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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