John McSweeney Books

SWAT Battle Tactics

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This handy manual lays the groundwork for police departments, paramilitary units or security companies to organize a SWAT unit capable of reacting to most situations. Learn what it takes to become...

Street Karate

By John McSweeney

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Street Karate consists of 35 real-life case studies of men and women from all walks of life who used simple karate techniques to successfully defend themselves against muggers, rapists, murderers,...

Jesus in the Book of Revelation

By John McSweeney

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A meddling priest

By John McSweeney

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Representation and contestation

By Jingyu Lin, John McSweeney

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Representation and Contestation

By McSweeney John Jr., Ching Yu Lin, John McSweeney

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A Welcome on the Mat: Father Tom Dunlea: A Memoir

By John McSweeney

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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.