Joseph D Agnese Books

Mystery Weekly Magazine

By Joseph D Agnese, Diana Deverell, Dale Phillips, Michael Coolen, Don Herald

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Signing Their Lives Away

By Joseph D Agnese, Denise Kiernan

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An entertaining and essential collection of stories about the surprising and strange fates of the fifty-six Founding Fathers who signed the Declaration of Independence.In the summer of 1776, a grou...

Signing Their Rights Away

By Joseph D Agnese, Denise Kiernan

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An entertaining and essential collection of stories about the surprising and strange fates of the thirty-nine statesmen who created the U.S. Constitution.Remember when our elected officials knew ho...

Daggyland 1

By Joseph D Agnese

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Murder on Book Row

By Joseph D Agnese

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Marshal of the Borgo

By Joseph D Agnese

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Murder on Book Row

By Joseph D Agnese

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Scientist and the Sociopath

By Joseph D Agnese

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Arm of Darkness

By Joseph D Agnese

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Marshal of the Borgo

By Joseph D Agnese

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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.