Charles M. Perry Books

"Whether it is a question of stabilizing U.S. and Alliance relations with Russia, adapting and enlarging Europe's primary security institutions, or restructuring military forces to meet the new cha...

U.S. Japan Alliance

By Toshi Yoshihara, Charles M. Perry

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Alliance Diversification and the Future of the U.S. Korean Security Relationship Institute for Foreign Policy Analysis

By James L. Schoff, Jacquelyn K. Davis, Toshi Yoshihara, Charles M. Perry

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"The security alliance between the United States and South Korea is fast approaching a major turning point in its history, and it coincides with fundamental changes in South Korean society, America...

Building Six Party Capacity for a WMD Free Korea Potomac Books Institute for Foreign Policy Analysis series

By James L. Schoff, Jacquelyn K. Davis, Charles M. Perry

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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.