Roger Hilsman Books

From Nuclear Military Strategy to a World Without War

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Sooner or later, if the world keeps following its current course, there will be a nuclear war. Roger Hilsman, who played a significant role during the Cuban Missile Crisis, is convinced that the on...

Foreign policy in the sixties

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Foreign Policy in the Sixties The Issues and the Instruments

By Roger Hilsman

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George Bush vs. Saddam Hussein

By Roger Hilsman

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The recent Gulf War, contends Emeritus Professor Roger Hilsman of Columbia University, was brought on not by the clash of national interests, but by the intense personal rivalry between George Bush...

American Guerrilla

By Roger Hilsman

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Classical Chinese Cooking

By Roger Hilsman

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A Layman s Guide to the Universe the Earth Life on Earth and the Migrations of Humankind

By Roger Hilsman

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The crouching future

By Roger Hilsman

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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.