Cathy Curtis Books

An Intermediate Course in Algebra: An Interactive Approach

By Alison Warr, Catherine Curtis, Penny Slingerland

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A First Course in Algebra: An Interactive Approach

By Alison Warr, Catherine Curtis, Penny Slingerland

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A generous vision

By Curtis Cathy Writer On Art

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The first biography of Elaine de Kooning, 'A Generous Vision' portrays a woman whose intelligence, droll sense of humor, and generosity of spirit endeared her to friends and gave her a starring rol...

Restless Ambition: Grace Hartigan, Painter

By Curtis Cathy Writer On Art

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"This first-ever biography of American painter Grace Hartigan traces her rise from virtually self-taught painter to art-world fame, her plunge into obscurity after leaving New York to marry a scien...

A First Course in Algebra

By Alison Warr, Penny Slingerland, Cathy Curtis

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An Intermediate Course in Algebra

By Alison Warr, Penny Slingerland, Cathy Curtis

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Alive Still

By Cathy Curtis

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Restless Ambition

By Cathy Curtis

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Splendid Intelligence

By Cathy Curtis

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Splendid Intelligence

By Cathy Curtis

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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.