Katherine Perkins Books

Foul is Fair

By Jeffrey Cook, Katherine Perkins

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Street fair

By Jeffrey Cook

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"School is out for the summer, which will give Megan O'Reilly's friends time to see that she really starts learning something useful. When music is magic and magic is sometimes medicine, it's easy...

A Fair Fight

By Jeffrey Cook, Katherine Perkins

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"Late December is a magical time of the year. Magical enough for the forces of the Fomoire to truly begin their conquest. Many people travel and consider new things during a gap year before college...

Once More Unto the Breach

By Jeffrey Cook, Katherine Perkins, Janice Stucki, Carol Gyzander, Rozene Morgandy, Esaias Mayo

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Steampunk Trails 2

By Eric Aren, Jessica Brawner, M. Wayne Miller, Liam Hogan, David B. Riley, Lyn McConchie, L. A. Spooner, Jeffrey Cook, Henry Ram, O. M. Grey, Katherine Perkins, J. A. Campbell, David Boop, Ella Gray, Peter J. Wacks, M. V. Essik

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Sharks Facts That May Suprise You

By Katherine Perkins

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Perfect and Easy Cake Decorating Ideas Cake Decorating Tips for Beginning Home Bakers

By Katherine Perkins

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Ketogenic Diet Plan for Beginners the Ultimate Guide to Keto

By Katherine Perkins

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DIY Quilt Easy Quilt Patterns for Beginning Quilters

By Katherine Perkins

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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.