Gene Lebell Books

Your Personal Handbook of Self Defense

By Gene Lebell

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The Toughest Man Alive

By Fiaz Rafiq

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The book was not authorized by the purported author Gene LeBell. The cover lists Gene LeBell as the author, but that is a lie. The publisher HNL Publishing was specifically denied permission to u...

Gene LeBell The Grappling Club Master

By Gene Lebell, Gene LeBell Lynn Salvatori

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Gene LeBell s Grappling World The Encyclopedia of Finishing Holds 2nd Expanded Edition

By Gene Lebell

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The Toughest Man Alive

By Fiaz Rafiq

Average: 0.00, 0 Ratings

The book was not authorized by the purported author Gene LeBell. The cover lists Gene LeBell as the author, but that is a lie. The publisher HNL Publishing was specifically denied permission to u...

Judo and self-defense for the young adult.

By Gene LeBell

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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.