Roger Dendinger Books

Scotland

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A look at the geographic, political, economic, and social aspects of Scotland, a country with ancient traditions that also plays a major role in the economy of present-day Europe.

Guatemala

By Roger Dendinger

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Describes the history, geography, government, economy, people, and culture of Guatemala.

Costa Rica

By Roger Dendinger

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These information-packed volumes provide comprehensive overviews of each nation's people, geography, history, government, economy, and culture.

Honduras

By Charles F. Gritzner, Roger Dendinger

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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.