Kathy Cooperman Books

The Very Principled Maggie Mayfield

By Kathy Cooperman

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Crimes Against a Book Club

By Katherine Kellgren, Kathy Cooperman

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Crimes against a book club

By Kathy Cooperman

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To make the fast money both best friends need, lawyer Sarah and chemist Annie create an antiaging face cream to sell to Annie's La Jolla book club, but the illegal ingredient Annie includes could b...

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.