Gianna Marino Books

Good friends learn a small but important lesson Owl and Rabbit are good friends and live in two small houses next to each other. They are perfectly happy . . . until Rabbit's garden gets in the way...

Just Like My Brother

By Gianna Marino

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Night Animals Need Sleep Too

By Gianna Marino

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Night Animals

By Gianna Marino

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The Outside

By Gianna Marino

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New York Times bestselling illustrator Gianna Marino helps little ones find their courage to face their fears and explore the world around them.Earl likes the inside and likes feeling safe. He also...

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.