J. Duggan Books

Airships in International Affairs 1890 1940
Airships in International Affairs 1890 1940

By John Duggan, Henry Cord Meyer

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"This book emphasizes the role of the airship as a unique attention-getting device to further the political ambitions of leaders and nations. Unlike the first spidery airplanes, monstrous airships...

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The life of Christ
The life of Christ

By J. Duggan

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Summer Series
Summer Series

By J. Duggan

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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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