Geoffrey Colvin Books

Humans are Underrated

By Geoffrey Colvin

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Break the Cycle of Alcoholism

By Geoff Colvin Bob Wiese Tina Wells

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The Upside of the Downturn

By Geoffrey Colvin

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The Upside of the Downturn

By Geoffrey Colvin

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The Upside of the Downturn

By Geoff Colvin

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Never waste a crisis.Some businesses—and some people—will emerge from today’s economic tumult stronger and more dominant than when it started. Others will weaken and fade. It all...

Managing the cycle of meltdowns for students with autism spectrum disorder

By Geoffrey Colvin

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7 Steps for Developing a Proactive Schoolwide Discipline Plan

By Geoffrey Geoff T. Colvin

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Defusing Disruptive Behavior In The Classroom

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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.