Jon L. Breen Books

Ellery Queen s Eyes of Mystery

By Isaac Asimov

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More Holmes for the Holidays

By Martin Harry Greenberg

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Flesh & Blood: Dark Desires

By Max-Allan Collins, Bill Pronzini, Stephen Mertz, Michael Collins, Mickey Spillane., Alan Ormsby, Wendi Lee, Jeremiah Healy, John Lutz, Marthayn Pelegrimas, O'Neil De Noux, Matthew V. Clemens, Bill Crider, Richard S. Meyers, Paul Bishop, Martin Meyers, Jon L. Breen, Jeff Gelb, Catherine Dain, Mary Kay Lane

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Sex and violence. They go together like greed and blackmail and jealousy and murder. Now acclaimed masters and rising stars of today's crime and mystery fiction offer erotic tales, luring you into...

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.

Jon L. Breen Books

Murder California Style

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Loose Lips

Ellery Queen s Eyes of Mystery

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