Howard Roberts Lamar Books

Reader's Encyclopedia of the American West

By Howard Roberts Lamar

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Texas crossings

By Howard Roberts Lamar

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The Frontier in History

By Leonard Thompson, Howard R. Lamar

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The New Encyclopedia of the American West

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The New Encyclopedia of the American West includes thousands of entries arranged alphabetically, from Ansel Adams and adobe architecture to Zion National Park and Zuni Indians; hundreds of illustra...

The Reader's encyclopedia of the American West

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Far Southwest, 1846-1912

By Howard Lamar, Howard Roberts Lamar

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The trader on the American frontier

By Howard Roberts Lamar

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Dakota Territory

By H. LaMar

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The Far Southwest 1846 1912 Western Americana

By Howard Roberts Lamar

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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.