William Hood Books

Mole - The True Story of the First Russian Spy to Become an American Counterspy

By Hood William, William Hood

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A look over my shoulder

By Richard Helms, William Hood

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"A Look Over My Shoulder begins with President Nixon's attempt to embroil the Central Intelligence Agency, of which Richard Helms was then the director, in the Watergate cover-up. Helms then recall...

Mole: The True Story of the First Russian Intelligence Officer Recruited by the CIA

By William Hood

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Spy Wednesday

By Hood William, William Hood

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Cry Spy

By Hood William, William Hood

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The Sunday spy

By Hood William

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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.