Helena Mayer Books

"It's time for the annual Skyview School musical. This year they'll be performing Sleeping Beauty. Jolie-Marie is ready to be the star-- just like she is every year. Cassie's excited, too-- she lov...

Seeing the future

By Helena Mayer

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After meeting a fortuneteller at the school carnival, Jolie-Marie, Cassie and Candee find that being sure of the future can cause problems in the present.

The tooth fairy

By Helena Mayer

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The Lost Riolu

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The power of three

By Helena Mayer

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Team Galactic enlists a ruthless helper to try to capture three of Sinnoh's powerful legendary Pokémon--Uxie, Mesprit, and Azelf--and Ash, Dawn, and Brock must protect the Pokémon from capture.

Bedtime stories

By Helena Mayer

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Wild surprise

By Helena Mayer

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Mechante surprise

By Helena Mayer

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The Case of the Wild Turkey Chase

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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.