Geoffrey A. Campbell Books

The Pentagon Papers

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Discusses the Supreme Court trial which resulted from the decision of the New York Times newspaper to publish secret government documents about the Vietnam War.

Thailand

By Geoffrey A. Campbell

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Examines the land, people, and history of Thailand and discusses its current state of affairs and place in the world today.

American War Library The Home Front

By Geoffrey Campbell

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Famous Trials The Lindbergh Kidnapping Famous Trials

By Geoffrey A. Campbell

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The Lucent Library of Homeland Security A Vulnerable America

By Geoffrey A. Campbell

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112 p. : 24 cm

American War Library Life of an American Soldier in the Persian Gulf American War Library

By Geoffrey A. Campbell

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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.