Patricia K. Kummer Books

Alabama

By Patricia K. Kummer

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Overview of the state of Alabama including history, geography, people, and living conditions.

Oregon

By Capstone Press. Geography Dept.

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Gives an overview of the state of Oregon, including its history, geography, people, and living conditions.

South Carolina

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An overview of the history, geography, and living conditions of South Carolina.

Virginia

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Gives an overview of the state of Virginia, including its history, geography, people, and living conditions.

Hawaii (One Nation)

By Patricia K. Kummer

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Gives an overview of the state of Hawaii, including its history, geography, people, and living conditions.

Missouri

By Patricia K. Kummer

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An overview of the history, geography, people, and living conditions of the state of Missouri.

Montana One Nation

By Patricia K. Kummer

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New Jersey

By Patricia K. Kummer

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An overview of the history, geography, people, and living conditions of the state of New Jersey.

North Carolina

By Patricia K. Kummer

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An overview of the history, geography, people, and living conditions of the state of North Carolina.

New Mexico

By Patricia K. Kummer

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An overview of the history, geography, people, and living conditions of the state of New Mexico.

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.