Cathal J. Nolan Books

U. S. Presidents and Foreign Policy

By Carl C. Hodge, Cathal J. Nolan

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Principled Diplomacy

By Cathal J. Nolan

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Notable U. S. Ambassadors Since 1775

By Cathal J. Nolan

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Ethics and statecraft

By Cathal J. Nolan

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"This collection of essays cuts to the quick of the most pressing moral issues facing decision-makers today, from the actions of ordinary soldiers in a combat zone to presidents deciding when and w...

Ethics and statecraft

By Cathal J. Nolan

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Ethics and statecraft

By Cathal J. Nolan

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Principled Diplomacy Security and Rights in U. S. Foreign Policy

By Cathal J. Nolan

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U.S. Presidents and Foreign Policy

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"In this volume, leading historians and political scientists examine the United States' changing foreign policy, president by president, from 1789 to the present. If knowledge of history makes it p...

The Greenwood encyclopedia of international relations

By Cathal J. Nolan

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The Greenwood encyclopedia of international relations

By Cathal J. Nolan

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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.