Kathy Duval Books

The three bears Halloween

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Is it a witch or a blond little girl hiding in the bushes of the spooky house when the three bears go trick or treating?

The Three Bears Christmas

By Kathy Duval

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After taking a walk on Christmas Eve while their freshly baked gingerbread cools, Papa, Mama, and Baby Bear arrive home to encounter another "trespasser," who does not have golden hair but wears a...

A bear s year

By Kathy Duval

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Illustrations and simple, rhyming text describe a year in the lives of bears as they journey through the seasons and raise their young.

A bear's year

By Kathy Duval

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Illustrations and simple, rhyming text describe a year in the lives of bears as they journey through the seasons and raise their young.

The Three Bears Christmas

By Kathy Duval

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After taking a walk on Christmas Eve while their freshly baked gingerbread cools, Papa, Mama, and Baby Bear arrive home to encounter another "trespasser," who does not have golden hair but wears a...

Take Me to Your BBQ

By Adam McCauley, Kathy Duval

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When Willie goes outside to check on his grill, he finds a UFO full of aliens who want some of his barbecue and chili, and then tear up his farm square dancing while he plays the fiddle. Includes a...

The Three Bears Halloween

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The Three Bears' Christmas

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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.