Jerrold M. Post Books

The World's Most Threatening Terrorist Networks and Criminal Gangs

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Terrorist organizations and international criminal networks pose an increasing danger to the world. This book looks at diverse groups from Al Qaeda to Mexican drug cartels and includes a chapter on...

When Illness Strikes the Leader: The Dilemma of the Captive King

By Robert S. Robins, Jerrold M. Post, Jerrold Post

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The Psychological Assessment of Political Leaders

By Jerrold M. Post

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The Psychological Assessment of Political Leaders

By Jerrold M. Post, Name Missing

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Provides comprehensive political psychology profiles and a deeper understanding of the volatile circumstances of global affairs.

Military Studies in the Jihad Against the Tyrants

By Jerrold M. Post

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Military Studies in the Jihad Against the Tyrants

By Jerrold M. Post

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Know Thy Enemy

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Know Thy Enemy

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Leaders and Their Followers in a Dangerous World

By Jerrold M. Post

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Narcissism and politics

By Jerrold M. Post

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"In this age of narcissism, the proliferation of politicians with significant narcissistic personality features is dramatic. Driven by dreams of glory, they seem to find the spotlight that the aren...

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.