John Cullen Books

Villard: The Life and Times of an American Titan
Villard: The Life and Times of an American Titan

By John Cullen, Alexandra De Borchgrave, Alexandra Villard De Borchgrave

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"Henry Villard was one of the most remarkable and important figures to shape the tumultuous history of nineteenth-century America. A preeminent Civil War journalist, an industrialist, and a financi...

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Lies
Lies

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The Lighting Handbook
The Lighting Handbook

By John Cullen

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Intersect
Intersect

By John T Cullen

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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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