Cynthia Harmony Books

Un aleteo de esperanza

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A heartwarming tale of a girl waiting for her beloved Papá to return when the monarchs fly south to their home in Mexico.Lucía loves to watch the monarchs' migration from her hom...

Mi Ciudad Sings

By Cynthia Harmony

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After experiencing a devastating earthquake, the spirit of a charming and vibrant Mexican neighborhood might be shaken, but it cannot be broken.As a little girl and her dog embark on their daily wa...

Mi ciudad canta

By Cynthia Harmony

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Después de vivir un temblor devastador, el espíritu de los vecinos en esta dinámica zona de la ciudad Mexicana se sacude, pero no se rompe.  Una pequeña niña...

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.