Harry Porter Books

Museo de Arte Olga Costa Jose Chavez Morado

By Porter Harry Translator, Maria De Jesus Vazquez Figueroa

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Well illustrated biography of famous Mexican contemporary masters, Olga Costa (1913-1993) and José Chávez Morado (1909), their marriage and art careers.

Mas parejas en el arte mexicano

By Dale Kaplan, Diana Goldberg, Clementina Rodriguez, Maria Campusano, Tara Fitzgerald, Harry Porter, Pedro Gonzalez, Alison Stewart

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Alistair the Alligator

By Harry Porter, Sharon Lewis

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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.