Patricia K. Kummer Books

New Jersey

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Provides an overview of the state of New Jersey, covering its history, geography, economy, people, and points of interest.

New Mexico

By Patricia K. Kummer

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Provides an overview of the state of New Mexico, covering its history, geography, economy, people, and points of interest.

North Carolina

By Patricia K. Kummer

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Provides an overview of the state of North Carolina, covering its history, geography, economy, people, and points of interest.

North Dakota

By Patricia K. Kummer

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Provides an overview of the state of North Dakota, covering its history, geography, economy, people, and points of interest.

Oklahoma

By Patricia K. Kummer

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Provides an overview of the state of Oklahoma, covering its history, geography, economy, people, and points of interest.

Rhode Island

By Patricia K. Kummer

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Provides an overview of the state of Rhode Island, covering its history, geography, economy, people, and points of interest.

Tennessee

By Patricia K. Kummer

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Provides an overview of the state of Tennessee, covering its history, geography, economy, people, and points of interest.

Utah

By Patricia K. Kummer

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Provides an overview of the state of Utah, covering its history, geography, economy, people, and points of interest.

Vermont

By Patricia K. Kummer

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Provides an overview of the state of Vermont, covering its history, geography, economy, people, and points of interest.

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.