Douglas Welsh Books

Vietnam War
Vietnam War

By Douglas Welsh

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History of the Vietnam War
History of the Vietnam War

By Douglas Welsh

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Civil War a Complete Military History
The history of the Vietnam War.
The complete military history of the Civil War
The complete military history of the Vietnam War
The complete military history of the Vietnam War

By Douglas Welsh

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A fact-filled, richly illustrated and thought-provoking book about the Vietnam War.

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History of the Vietnam War
History of the Vietnam War

By Douglas Welsh

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The USA in World War 1 Americans at war
The U.S.A. in World War II
The U.S.A. in World War II

By Douglas Welsh

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The U.S.A. in World War II
The U.S.A. in World War II

By Douglas Welsh

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If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

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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