Tom McGowen Books

The beginnings of science

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Discusses the roots of science as developed by primitive people, Greek thinkers, Muslim scholars, and those responsible for the birth of the scientific method in Europe.

Frederick the Great Bismarck and the Unification of Germany In World History

By Tom McGowen

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The Spanish-American War and Teddy Roosevelt in American history

By Tom McGowen

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Details the pivotal role that Teddy Roosevelt played during the Spanish-American War and the consequences of his involvement.

The Revolutionary War and George Washington's army in American history

By Tom McGowen

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Details the pivotal role that George Washington played during the American Revolution and the consequences of his involvement.

Space race

By Tom McGowen

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"Discusses the United States' role in the space race in the 1960s, including the beginning of NASA, early space exploration, and the first moon landing by American astronauts"--Provided by publisher.

Only Glupmaker in the U.S. Navy

By Tom McGowen

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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.