Mary Tillworth Books

As Princess Alexa wanders through the royal garden reading a book about a magical princess, she comes upon a secret door, which leads her to learn a lesson about believing in herself.

Meet my friends!

By Mary Tillworth

Average: 0.00, 0 Ratings

Dora moves to the big city and meets new friends.

The good the bad and the krabby

By Mary Tillworth

Average: 0.00, 0 Ratings

Nickelodeon's SpongeBob SquarePants comes to the big screen in a 3-D movie. Boys and girls 3 to 7 will love this full-color storybook based on the film.

Meet my friends

By Mary Tillworth

Average: 0.00, 0 Ratings

Dora moves to the big city and meets new friends.

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.