Eric Oatman Books

Thurgood Marshall Civil Rights Champion Biography

By Eric Oatman

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The American Revolution and beyond

By Eric Oatman

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Describes the United States fight for freedom and civil rights and how it inspired Simon Bolivar to lead Venezuela to a democratic form of government.

Prospects for energy in America

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A compilation of articles discussing the energy problem and the pros and cons of possible solutions.

"When the U.S. Constitution was written more than 200 years ago, many people thought something was missing. Learn how leaders decided to add the bill of rights to protect the rights of individuals....

Houghton Mifflin Social Studies

By Houghton Mifflin Company Staff

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Cowboys on the Western Trail

By Eric Oatman

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Amending the Constitution Teacher s Guide

By LLC Staff Benchmark Education Company

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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.