Robert Knott Books

Earthworms Great Exploration in Math and Science Series

By Robert C. Knott

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River Cutters

By Lincoln Bergman, Jefferey S. Kaufmann, Robert Knott, Jeffereys Kaufmann

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Territorial Marshals Virgil Cole and Everett Hitch are back in Appaloosa, where things have been exceptionally quiet. Then an ominous storm rolls in, bringing along a band of night riders with a de...

Robert B. Parker s blackjack

By Robert Knott

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Managing an influx of carpetbaggers, gamblers, thieves and other disreputables in prosperous Appaloosa, Cole and Hitch are challenged by a flashy and womanizing casino owner who proves slippery whe...

Robert B. Parker's Bull River

By Robert Knott

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After hunting down murderer and bandito Captain Alejandro Vasquez, Territorial Marshal Virgil Cole and Deputy Everett Hitch return him to Citadel to stand trial. As soon as they remand Vasquez into...

Robert B. Parker s Revelation

By Robert Knott

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"Itinerant lawmen Virgil Cole and Everett Hitch return to confront an escaped criminal in the grittiest entry yet of the New York Times bestselling series. Territorial marshals Virgil Cole and Ever...

Robert B. Parker s Revelation

By Robert Knott

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Robert B. Parker s Revelation

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Robert B. Parker s Bull River

By Robert Knott

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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.