Charles Patterson Books

The Oxford 50th Anniversary Book of the United Nations

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The heroes who fell from grace

By Patterson Charles J.

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Thomas Jefferson

By Charles Patterson

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Examines the life, political career, and achievements of the third president of the United States, including a discussion of his beliefs and their influence on the Declaration of Independence.

Marian Anderson

By Charles Patterson

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A biography of the opera and concert singer who, among other achievements, was the first black soloist to perform with the Metropolitan Opera Company in 1955.

Miscellaneous

By Charles Patterson

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Hafiz Al Asad of Syria

By Charles Patterson

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Marian Anderson

By Charles Patterson

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Animal Rights

By Charles Patterson

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Anti Semitism

By Charles Patterson

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Animal Rights

By Charles Patterson

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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.