Diane Kelsay Harvey Books

Una jornada de esperanza Audiocassette Tape

By Bob Harvey, Diane Kelsay Harvey

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Fishing with Peter

By Diane Kelsay Harvey

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Text in English and Spanish discusses the way of life of brown pelicans and other fishing birds in the unique salt water environment along the coast of Belize, a habitat which is now threatened.

Melody's mystery

By Diane Kelsay Harvey

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Presents in English and Spanish the life cycle of Melody, a monarch butterfly.

Fishing With Peter Pescando Con Pedro Rivendell Nature Series

By Bob Harvey, Diane Kelsay Harvey

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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.