Cathy Hapka Books

Walt Disney's Minnie mysteries.

By Cathy Hapka

Average: 0.00, 0 Ratings

Walt Disney's Minnie mysteries.

By Cathy Hapka

Average: 0.00, 0 Ratings

Mickey's Walt Disney World adventure

By Cathy Hapka

Average: 0.00, 0 Ratings

Blu, a rare blue Spix's Macaw, travels to Rio de Janeiro to save his species, where he meets Jewel, the only other bird of his kind, but they are soon kidnapped by rare animal smugglers and must es...

The helmet

By Cathy Hapka

Average: 0.00, 0 Ratings

When Kowalski invents a helmet that can turn anything the wearer imagines into reality, King Julien puts it on and everything goes haywire.

Oasis

By Cathy Hapka

Average: 0.00, 0 Ratings

How Not to Babysit Your Brother

By Cathy Hapka

Average: 0.00, 0 Ratings

Will’s little brother, Steve, is big trouble. What happens when Will has to babysit? Steve’s over-the-top mishaps and Will’s attempts to get him under control are sure to keep kids reading—and laug...

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.