H. Bradford Westerfield Books

The instruments of America's foreign policy

By H. Bradford Westerfield

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Inside CIA's Private World: Declassified Articles from the Agency s Internal Journal, 1955-1992

By H. Bradford Westerfield

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For forty years the Central Intelligence Agency has published an in-house journal, Studies in Intelligence, for CIA eyes only. Now the agency has declassified much of this material. This engrossing...

Inside CIA's Private World: Declassified Articles from the Agency s Internal Journal, 1955-1992

By H. Bradford Westerfield

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Destruction of the European Jews

By H. Bradford Westerfield

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Inside CIA s Private World

By Ericksen

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Foreign policy and party politics: Pearl Harbor to Korea

By H. Bradford Westerfield

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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.