Richard Wetzel Books

Sexual Wisdom

By Richard Wetzel

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Sexual Wisdom

By Richard Wetzel

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Sexual wisdom

By Wetzel Richard M.D.

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The globalization of music in history

By Richard D. Wetzel

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This book contextualizes a globalization process that has since ancient times involved the creation, use, and world-wide movement of song, instrumental music, musical drama, music with dance, conce...

Sexual Wisdom for Catholic Adolescents

By Richard Wetzel

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Globalization of Music in History

By Richard Wetzel

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Globalization of Music in History

By Richard Wetzel

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Globalization of Music in History

By Richard Wetzel

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Globalization of Music in History

By Richard Wetzel

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Johann Leisentrit s Geistliche Lieder und Psalmen 1567

By Erika Heitmeyer, Richard Wetzel

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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.