Arnold M. Ludwig Books

The price of greatness

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Exploring the lives and achievements of over 1,000 extraordinary men and women, this book offers answers to the age-old questions about the relationship between mental illness and greatness, and al...

The Price of Greatness

By Arnold M. Ludwig

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Lsd and Alcoholism

By Arnold M. Ludwig

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King of the Mountain

By Arnold M. Ludwig

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King of the Mountain

By Arnold M. Ludwig

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How Do We Know Who We Are?: The Biography of the Self

By Arnold M. Ludwig

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Handbook of Psychiatry Volume 19

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R. S. V. P. Man

By Arnold Ludwig

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Principles of Clinical Psychology

By Arnold M. Ludwig

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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.