Randall G. Hassell Books

Complete Idiot s Guide to Karate

By Randall G. Hassell, Edmond Otis

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Karate Training Guide

By Randall G. Hassell

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Shotokan Karate: Its History and Evolution

By Randall G. Hassell

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The Complete Idiot's Guide to Karate

By Randall Hassell And Edmond Otis

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Learn all about the art of karate with The Complete Idiot’s Guide® to Karate, including: • Simple tips for mastering the ancient Japanese martial art of karate • Behind-t...

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.