William Roe Polk Books

The Birth of America

By William Roe Polk

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Neighbors and Strangers: The Fundamentals of Foreign Affairs

By William Roe Polk

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Drawing on decades of experience in government and in the academy, William R. Polk offers a uniquely informed view of foreign relations as they occur in the real world. Rather than focusing narrowl...

The Elusive Peace: The Middle East in the Twentieth Century

By William Roe Polk

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Passing Brave

By William Mares, William Roe Polk

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The Arab World

By William Roe Polk

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The Arab world today

By William Roe Polk

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Passing Brave

By William R. Polk, William Roe Polk

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Politicas violentas

By William Roe Polk

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Violent Politics

By William Roe Polk

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Violent Politics

By William Roe Polk

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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.