Michael D. Kelleher Books

New arenas for violence

By Michael D. Kelleher

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Profiling the lethal employee

By Michael D. Kelleher

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Flash Point: The American Mass Murderer

By Michael D. Kelleher

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Murder Most Rare: The Female Serial Killer

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When good kids kill

By Michael D. Kelleher

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When Good Kids Kill is the first book to focus exclusively on homicides committed by previously nonviolent teens, exploring many of the prominent criminal cases covered recently by the media. Kelle...

This Is the Zodiac Speaking: Into the Mind of a Serial Killer

By Michael D. Kelleher, David Van Nuys

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Murder Most Rare

By Michael D. Kelleher

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When good kids kill

By Michael D. Kelleher

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Three Times Dead

By Michael D. Kelleher

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When Good Kids Kill

By Michael D. Kelleher

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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.