Roger E. Hernandez Books

Cubans In America

By Alex Anton, Roger E. Hernandez

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Discovering South America Discovering South America Series

By Leeanne Gelletly, Charles J. Shields, Colleen Madonna Flood Williams, Roger E. Hernandez, Bob Temple

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Paraguay

By Roger E. Hernandez

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Presents the geography, history, economy, cities and communities, and people and culture of Paraguay. Includes recipes, related projects, and a calendar of festivals.

Cuba Discovering

By Roger E. Hernandez

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South America

By Roger E. Hernandez

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Cuban immigration

By Roger E. Hernandez

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An overview of immigration from Cuba to the United States and Canada since the 1960s, when immigration laws were changed to permit greater numbers of people to enter these countries.

Immigration

By Roger E. Hernandez

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The geography of Mexico

By Colleen Madonna Flood Williams

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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.