Carl Boyd Books

Hitler's Japanese confidant
Hitler's Japanese confidant

By Carl Boyd

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Extraordinary Envo
Extraordinary Envo

By Carl Boyd

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American command of the sea through carriers, codes, and the silent service
Plain teaching
Plain teaching

By Carl R. Boyd

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The Japanese Submarine Force and World War II
The Japanese submarine force and World War II
The Japanese submarine force and World War II

By Carl Boyd

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The fact that Japanese submarines were relatively ineffective in World War II, particularly when compared with those of the Americans and Germans, has long been acknowledged, but the reasons cited...

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The Japanese submarine force and world war II
Hitler s Japanese Confidant
Hitler s Japanese Confidant

By Carl Boyd

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The extraordinary envoy
The extraordinary envoy

By Carl Boyd

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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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