Peter Tsouras Books

Operation Just Cause

By Bruce W. Watson

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Changing orders

By Peter Tsouras

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A grim, but fascinating pageant. This is the story of the world's armies from the end of the Second World War - their development and progress, their objectives and performance, and their strategie...

United States Army

By Peter Tsouras

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Disaster at D Day

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Dixie Victorious

By Peter Tsouras

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Alexander

By Peter Tsouras

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"Alexander the Great (356-323 B.C.E.), who reigned as king of Macedonia for only thirteen years, set a flame of conquest that introduced the dynamism of Hellenism to the Mediterranean, Middle Easte...

Alexander

By Peter Tsouras

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Montezuma

By Peter G. Tsouras

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Montezuma

By Peter G. Tsouras

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Britannia s Fist From Civil War to World War

By Peter G. Tsouras, Peter Tsouras

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Once too often in the War Between the States, Great Britain's support for the Confederacy takes it to the brink of war with the Union. The escape of a British-built Confederate ironclad finally ign...

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.