Robert Knott Books

Robert B. Parker's Blackjack

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Itinerant lawmen Virgil Cole and Everett Hitch return in the gritty new installment of the New York Times–bestselling series. Appaloosa, the hometown of Territorial Marshals Virgil Cole...

Appaloosa

By Ed Harris, Bob L. Harris, Ginger Sledge, Robert Knott

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1880s, the American West. Randall Bragg is a rich landowner who is wanted for murdering the town marshal. Lawman Virgil Cole and his deputy Everett Hitch are two friends who are hired to defend a l...

Robert B. Parker's The Bridge

By Robert B. Parker, Robert Knott

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Robert B. Parker's The Bridge

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The next gritty, gun-slinging entry in the New York Times–bestselling series, featuring itinerant lawmen Virgil Cole and Everett Hitch.Territorial Marshals Virgil Cole and Everett Hitch are back in...

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.