David Schaffer Books

Pediatric Eye Disease: Color Atlas & Synopsis
Iraq
Iraq

By David Schaffer

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History of Nations Iraq
History of Nations Iraq

By David Schaffer

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Vermont
Vermont

By David Schaffer

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Discusses the land and climate, economy, government, and history of the state of Vermont. Includes Internet links to Web sites.

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Kentucky
Kentucky

By David Schaffer

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Discusses the land and climate, economy, government, and history of the Bluegrass State. Includes Internet links to Web sites related to Kentucky.

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Idaho
Idaho

By David Schaffer

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Discusses the land and climate, economy, government, and history of the Spud State. Includes Internet links to Web sites related to Idaho.

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Discovering South America's land, people, and wildlife
World History Series Viking Conquest
World History Series The Iran Iraq War
People in the News Bono People in the News

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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.

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