Kristin O Donnell Tubb Books

The 14th Sign

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On her thirteenth birthday, Jalen unwittingly brings the twelve signs of the zodiac to life through a mysterious old book, and soon she, her friend Ellie, and Ellie's brother, Brennan, are battling...

A dog like Daisy

By Kristin O Donnell Tubb

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Daisy has only ten weeks to prove her usefulness or else be sent back to the pound. Yet if she goes back, who will protect Colonel Victor from his PTSD attacks? Or save the littler human, Micah, fr...

A Dog Like Daisy

By Kristin O Donnell Tubb

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Zeus Dog of Chaos

By Kristin O Donnell Tubb

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The Bill of Rights Freedom from Cruel and Unusual Punishment The Bill of Rights

By Kristin O Donnell Tubb

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Freedom From Cruel And Unusual Punishment Bill of Rights San Diego Calif. .

By Kristin O Donnell Tubb

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Zeus Dog of Chaos

By Kristin O Donnell Tubb, Todd Haberkorn

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Zeus Dog of Chaos

By Kristin O Donnell Tubb

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The Story Collector

By Iacopo Bruno, Kristin O Donnell Tubb, Brittany Pressley

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The Story Seeker

By Iacopo Bruno, Kristin O Donnell Tubb, Brittany Pressley

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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.