James Duffy Books

Uncle Shamus

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Ten-year-old Akers and his friend Marleena are intrigued by the blind black ex-convict who moves in to their Oklahoma shanty town and enlists their help in a secret plan.

During the summer after seventh grade, life in a small New Hampshire town improves for Amy, when new friendships help her deal with her father's death, her mother's emotional problems, and the accu...

Radical Red

By Duffy James

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The life of a twelve-year-old Irish girl living in Albany, New York, in the 1890s undergoes many changes when she and her mother become involved with Susan B. Anthony and her suffragist.

Dog bites man, city shocked!

By Duffy James

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"In Dog Bites Man, novelist James Duffy mixes it up in a lively tale of American politics in which rich movers and shakers, politically correct crusaders and scandal-hungry media types conspire to...

Automotive Collision Repair Video 8

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Automotive Collision Repair

By James Duffy

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Workbook for Auto Fuel Systems

By James Duffy, John Hurt

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Instructor s Guide and Answer Key for Auto Fuel Systems

By Howard Bud Smith, John Hurt, James E. Duffy

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International directory of scholars and specialists in Third World studies

By Duffy James

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The Mission of Catholic Radio

By James Duffy

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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.