David Jefferson Books

This volume represents the proceedings of a symposium on "Human Population and the Environmental Crisis" held at the University of California, Los Angeles, in October 1993 and convened by the IGPP...

Animals in Danger

By John Hunt, David Jefferson

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UNDERSTANDING EXCEPTIONAL

By David Jefferson, Michael Volrich, John Mather

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Goodbye Old Friend

By David Jefferson

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Maine Horse Doctor

By David Jefferson

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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.