D. M. Ulmer Books

The Roche Harbor Caper
The Roche Harbor Caper

By D. M. Ulmer

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Shadows of Heroes
Shadows of Heroes

By D. M. Ulmer

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Missing Person
Missing Person

By D. M. Ulmer, W. H. Hesse

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Beyond Silent Battleground
Beyond Silent Battleground

By D. M. Ulmer

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Silent Battleground
Silent Battleground

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Where or When
Where or When

By D. M. Ulmer

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Missing Person
Missing Person

By D. M. Ulmer, W. H. Hesse

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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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