Cathleen M. Norman Books

A Pikes Peak partnership

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"With his fortune made during the Cripple Creek gold rush and subsequent commercial and industrial ventures, Spencer Penrose, the maverick son of a wealthy Philadelphia clan, was the most prominent...

A Pikes Peak Partnership

By Thomas J. Noel, Cathleen M. Norman

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In Around Old Colorado City

By Cathleen Norman

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Pikes Peak Partnership a

By Thomas J. Noel, Cathleen M. Norman

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Lakewood Country Club

By Cathleen M. Norman

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Exploring Washington s Majestic State Capitol

By Cathleen M. Norman

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Loveland Ski Area

By Cathleen M. Norman

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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.