John Shirley Books

Resident Evil: Retribution - The Official Movie Novelization

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Resident Evil: Retribution in will be released in 3D on September 14, 2012. It is the fifth installment in the massively successful Resident Evil film series, based on the hugely pop...

THE FIRST ORIGINAL NOVEL TO TIE-IN WITH THE HIT US SHOW, INSPIRED BY THE GRIMM BROTHERS' CLASSIC FAIRY TALES!Back in the 19th century a Wesen and a Grimm fight to the death. The Grimm wins, but the...

Blood in Sweet River

By John Shirley

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Ralph Compton writer, John Shirley, takes traditional Westerns on a wild ride with the epic adventures of master gunfighter, horseman, and Civil War veteran Cleveland Trewe as he and his strong wif...

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.