Joel Norris Books

Horn Of The Goat The Charles Ng and Leonard Lake Murders

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Serial Killers: The Growing Menace

By Joel Norris

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Through extensive research and interviews with five notorious serial killers, author Joel Norris demonstrates that serial killers have specific biological and genetic makeups that can be identified...

The killers next door

By Joel Norris, William Birnes

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Includes material on Lucas John Helder, the Smiley Face bomber, the Luby Cafeteria massacre, Joe Fischer, Bobby Joe Long, Henry Lee Lucas, Daniel Rakowitz, Laurie Wasserman Dann, Charles Gervais, C...

Henry Lee Lucas.

By Joel Norris

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Arthur Shawcross, the Genesee River killer

By Joel Norris

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Jeffery Dahmer

By Joel Norris, Dr. Joel Norris

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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.