William W. Lewis Books

The Power of Productivity: Wealth, Poverty, and the Threat to Global Stability

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The disparity between rich and poor countries is the most serious, intractable problem facing the world today. The chronic poverty of many nations affects more than the citizens and economies of th...

The Power of Productivity: Wealth, Poverty, and the Threat to Global Stability

By William W. Lewis

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Power of Productivity

By William W. Lewis

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Experiential Theatres

By William W. Lewis, Sean Bartley

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Experiential Theatres

By William W. Lewis, Sean Bartley

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Experiential Theatres

By William W. Lewis, Sean Bartley

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Experiential Theatres

By William W. Lewis, Sean Bartley

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Experiential Theatres

By William W. Lewis, Sean Bartley

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Power of Productivity

By William W. Lewis

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Experiential Spectatorship

By William W. Lewis

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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.