George Curtis Books

Proactive Security Administration

By George E. Curtis

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Ancient Knowledge

By George Curtis

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Hard cover edition. An ideal gift for someone interested in mystery, archaeology, astronomy, aliens, and so on. This book details the search for ancient knowledge and reveals things not previously...

Ancient Knowledge Volume 2

By George Curtis

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Life Insurance Taxation

By George Curtis

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A Treatise on Gunter s Scale and the Sliding Rule Together with a Description and Use of the Sector Protractor Plain Scale and Line of Chords

By George Curtis

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Spiritmasters

By George Curtis, G. Curtis

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George Curtis Training Greyhounds

By George Curtis, Julia Barnes

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Ancient Knowledge Volume 3

By George Curtis

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Prue And I

By George William Curtis

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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.