George E. Webb Books

The Evolution Controversy in America

By George E. Webb

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Science in the American Southwest

By George Ernest Webb

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The evolution controversy in America

By George Ernest Webb

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For well over a century, the United States has witnessed a prolonged debate over organic evolution and teaching of the theory in the nation's public schools. The controversy that began with the pub...

Tree rings and telescopes

By George Ernest Webb

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A pioneer educator and scientist in Arizona, Douglass had a distinguished career as an astronomer, and then established the field of Dedrochronology, the dating of tree rings, that changed the fiel...

A Pima Remembers

By George E. Webb

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Science in the American Southwest

By George E. Webb

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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.