Dean R. Koontz Books

"The dead don't talk. I don't know why". But they do try to communicate, with a short-order cook in a small desert town serving as their reluctant confidant. Odd Thomas thinks of himself as an ordi...

Odd Thomas

By Dean Koontz

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The Taking

By Dean Koontz

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The Taking

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Life Expectancy

By Dean Koontz

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From the moment Jimmy Tock is born a strange destiny is thrust upon him. His grandfather prophesies five dark days in his grandson's life. Five dates in which Jimmy will face terror, violence, mali...

Velocity

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Velocity

By Edward Gorman

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Forever Odd

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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.