James H. O Keefe Books

The ECG criteria book

By James H. O Keefe

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Diabetes essentials

By James H. O Keefe

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Let me tell you a story

By James H. O Keefe

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In Let Me Tell You a Story, Dr. James O'Keefe and his dietitian wife Joan O'Keefe, co-authors of the best-selling The Forever Young Diet & Lifestyle , present stories of real-life people and how th...

The Complete Guide to ECGS

By Mark Freed, James H. O Keefe, James O Keefe, Stephen C. Hammill

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The Ecg Criteria Book

By Mark S. Freed, James H. O Keefe, Stephen C. Hammill

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Dyslipidemia Essentials

By Christie M. Ballantyne, James H. O Keefe, Antonio M. Gotto

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Diabetes essentials

By James H. O Keefe

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Dyslipidemia Essentials

By Christie M. Ballantyne, James H. O Keefe, Antonio M. Gotto

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Diabetes essentials

By James H. O Keefe

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Dyslipidemia Essentials

By Christie M. Ballantyne, James H. O Keefe, Antonio M. Gotto

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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.