Cathy Hapka Books

Beware The Bohrok (Bionicle Chronicles)

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The Bohrok are devastating Mata Nui in huge swarms, destroying the land. Only the Toa can stop them but are they strong enough? This is an adventure story uniting the powerful Toa against the evil...

Makuta'S Revenge

By Cathy Hapka

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Stripped of their powers, the warriors are left defenceless. The race is on as they set off to re-discover their powers and prepare to battle with new, more evil creatures: the Bohrok-kal. Can the...

Kung Fu Panda The Movie Storybook

By Cathy Hapka, Justin Gerard, Catherine Hapka, Adapted By Catherine Hapka, Pencils By Marcelo Matere, Paintings Bu Justin Gerard, Mrcelo Matere

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Kung Fu Panda is one of the most anticpated films of 2008. With Jack Black, Dustin Hoffman and Angelina Jolie on board, it is set to be a global blockbuster!

I Can Read

By Movie Tie-In, Cathy Hapka

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Stuart Little 2: The Joke Book

By Cathy Hapka, Catherine Hapka

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What's Snowbell the cat's favorite color? Purr-ple What is Stuart's favorite breakfast cereal? Mice Krispies Chock full of funny quips, puns, knock-knock jokes, and more, this book captures the liv...

Fortune Donut

By Cathy Hapka, Catherine Hapka

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Mucha Lucha!: Big Bad Flea

By Cathy Hapka, Catherine Hapka, Adapted By Catherine Hapka

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Rikochet, Buena Girl, and the Flea want to become the best Masked Wrestlers ever! If they study hard and live by the Code of Masked Wrestling -- Honor, Family, Tradition, Donuts! -- their dreams of...

Doggone It

By Cathy Hapka, Catherine Hapka

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Mucha Lucha!: A Little Fishy

By Cathy Hapka, Catherine Hapka

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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.