Joseph R. Duffy Books

**Selected for Doody's Core Titles® 2024 with "Essential Purchase" designation in Communication Sciences & Disorders** Ensure you're up to speed with the most recent findings in motor speech disord...

Clinical Evaluation of Speech Production Mechanisms

By Thomas J. Hixon, Joseph R. Duffy

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Motor Speech Disorders - Elsevier Ebook on Vitalsource Retail Access Card: Substrates, Differential Diagnosis, and Management

By Joseph R. Duffy

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Motor Speech Disorders

By Joseph R. 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.