John D. Hollis Books

Wrestling With The Devil

By Steve Borden, John D. Hollis, Lex Luger

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SGT. RODNEY M. DAVIS

By John D. Hollis

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Wrestling with the Devil

By John D. Hollis, Lex Luger, Steve Sting Borden

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Wrestling With The Devil: The True Story Of A World Champion Professional Wrestler--His Reign, Ruin, And Redemption

By Steve "Sting" Borden, John D. Hollis, Lex Luger

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Lex Luger, wrestling megasensation and three-time world heavyweight champion, ruled the ring for years as “The Total Package.” Whether he was making a dramatic entrance from a helicopter, defeating...

Sgt. Rodney M. Davis

By John D. Hollis

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Wrestling with the Devil: The True Story of a World Champion Professional Wrestler-His Reign, Ruin, and Redemption

By Lex Luger

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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.