Theresa Kay Books

Broken skies

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"Thirty years ago, civilization collapsed. Few survived. Ten years ago, the aliens arrived and stayed. One year ago, I killed two men and went a little crazy. Today, the aliens took my brother and...

The Telepath Chronicles

By Nina Croft, MeiLin Miranda, Peter Cawdron, Elle Casey, Therin Knite, Theresa Kay, David Gatewood, Autumn Kalquist, Samuel Peralta, E.E. Giorgi

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Beyond the Stars New Worlds New Suns

By Josi Russell, Theresa Kay, Anne Kelleher, Michael Ezell, Ellen Campbell, Samuel Peralta, C J Cherryh, Patrice Fitzgerald, Jill Hand, David Bruns

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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.