Karin Kallmaker Books

Love by the Numbers

By Karin Kallmaker

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My lady lipstick

By Karin Kallmaker

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"Anita Topaz, Queen of the Bodice Rippers, is deliberately a woman of mystery. But pressure is mounting for Anita to reveal herself to her clamoring public. It's scrutiny that writer Paris Ellison...

Sugar

By Karin Kallmaker

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Car Pool

By Karin Kallmaker

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Forge of Virgins

By Karin Kallmaker

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Bell Book and Dyke

By Barbara Johnson, Karin Kallmaker, Julia Watts, Therese Szymanski

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Just Like That

By Karin Kallmaker

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Paperback Romance

By Karin Kallmaker

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18th Castro

By Karin Kallmaker

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Stake Through the Heart

By Barbara Johnson, Karin Kallmaker, Julia Watts, Therese Szymanski

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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.