Philippe Costamagna Books

The eye

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"It's a rare and secret profession, comprising a few dozen people around the world equipped with a mysterious mixture of knowledge and innate sensibility. Summoned to Swiss bank vaults, Fifth Avenu...

Histoires d oeils

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La peinture de genre au temps du cardinal Fesch

By Olivier Bonfait, Philippe Costamagna

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Francesco Salviati et la bella maniera

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Pontormo

By Philippe Costamagna

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Disegno, giudizio e bella maniera

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Eye

By Philippe Costamagna, Frank Wynne

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Le cardinal Fesch et l art de son temps

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Les gouts de Napoleon

By Philippe Costamagna

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Plaisirs de France Art et culture francais de la Renaissance a aujourd hui

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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.