Anna Pizzelli Books

Geronimo, Thea, and Trap are exploring a mysterious old castle built by the founder of New Mouse City. Can they unlock all its rooms and discover its secrets? Also includes bonus mini mystery and c...

Pirate spacecat attack

By Elisabetta Dami

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Geronimo Stiltonix takes MouseStar 1's broken computer to a distant planet to be repaired by a brilliant inventor, but pirate spacecats attack and steal the device, and the spacemice must retrieve...

Pirate Spacecat Attack Geronimo Stilton Spacemice 10

By Elisabetta Dami

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The phantom of the theater

By Elisabetta Dami

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The famous opera singer Violetta von Cacklefur is in Gloomeria to perform at the Royal Mosetropolitan Theater! But the mischievous phantom of the theater has an old grudge against her. It's up to C...

Hug a Tree Geronimo

By Elisabetta Dami, Silvia Bigolin, Daria Cerchi, Anna Pizzelli

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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.