Callie Barkley Books

Ellie and the Good Luck Pig

By Marsha Riti, Callie Barkley

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Ellie and the Good Luck Pig

By Marsha Riti, Callie Barkley

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Liz and the Sand Castle Contest

By Marsha Riti, Callie Barkley

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Liz and the Sand Castle Contest

By Marsha Riti, Callie Barkley

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Marion takes charge

By Callie Barkley

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When Marion finally gets the chance to babysit her little sister, she finds that the task is harder than she expected, especially when she gets called to the Critter Club to help with a stray cat a...

Ellie the flower girl

By Callie Barkley

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"Ellie has always wanted to go to wedding, and her hopes finally come true when her cousin asks her to be a flower girl at her wedding. Then the Critter Club gets the cutest guest Ellie has ever se...

Ellie the flower girl

By Callie Barkley

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Ellie the Flower Girl

By Callie Barkley, Tracy Bishop

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Critter Club

By Marsha Riti, Callie Barkley

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Critter Club 3 Pack

By Marsha Riti, Callie Barkley

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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.