Ashley Olsen Books

Join Mary-Kate and Ashley Olsen and their friends for a Christmas party in the high mountains of Vail, Colorado where they ski, snowmobile, and go sledding.

Case of the Jingle Bell Jinx New Adventures of Mary Kate Ashley Turtleback

By Ashley Olsen, Leon Leonhardt, Mary Kate Olsen

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Case of the Giggling Ghost New Adventures of Mary Kate Ashley Turtleback

By Melinda Metz, Ashley Olsen, Mary Kate Olsen

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The Case of the Sundae Surprise

By Melinda Metz, Ashley Olsen

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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.