Loch K. Johnson Books

National security intelligence

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"National security intelligence is a vast, complex, and important topic, made doubly hard for citizens to understand because of the thick veils of secrecy that surround it. In the second edition of...

Intelligence

By James J. Wirtz, Loch K. Johnson

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Third Option

By Loch K. Johnson

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America s Secret Power

By Loch K. Johnson

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Spy Watching

By Loch K. Johnson

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Threat on the Horizon

By Loch K. Johnson

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Strategic Intelligence

By Loch K. Johnson

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Season of Inquiry

By Loch K. Johnson

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Handbook of Intelligence Studies

By Loch K. Johnson

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Essentials of strategic intelligence

By Loch K. Johnson

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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.