John Prados Books

Combined Fleet Decoded: The Secret History of American Intelligence and the Japanese Navy in World War II

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Combined Fleet Decoded offers a profoundly new perspective on the naval war in the Pacific during World War II, examining every aspect of the secret war of intelligence - from radio dispatches and...

The Soviet Estimate: U.S. Intelligence Analysis and Soviet Strategic Forces - Updated Edition

By John Prados

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The Soviet Estimate: U.S. Intelligence Analysis and Soviet Strategic Forces - Updated Edition

By John Prados

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The hidden history of the Vietnam War

By John Prados

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In December 1974, a front-page story in the New York Times revealed the explosive details of illegal domestic spying by the Central Intelligence Agency. This included political surveillance, eavesd...

Islands of Destiny

By John Prados

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The Battle of Midway is traditionally held as the point when Allied forces gained advantage over the Japanese. In Islands of Destiny, acclaimed historian and military intelligence expert John Prado...

Normandy Crucible

By John Prados

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A military intelligence expert examines the most formative battle of World War II. The Battle of Normandy was the greatest offensive campaign the world had ever seen. Millions of soldiers battlin...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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.