Peggy Gavan Books

365 ways you can make the world a better place in the new millennium

By Peggy Gavan

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Seasons Troll First Start Science

By Peggy Gavan, Susan T. Hall

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Meet the real me

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Students in grades two through eight describe themselves, discussing their goals, dreams, talents, and other special qualities.

Trees

By Peggy Gavan

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Examines the different parts of a tree and describes various kinds of trees and how they can be enjoyed by people.

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.