German Gan Quesada Books

Historia de la musica en Espana e Hispanoamerica volumen 7

By Alberto Gonzalez Lapuente, Gemma Perez Zalduondo, Victor Pliego De Andres, German Gan Quesada, Jorge De Persia Marmo

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Music and Francoism

By Gemma Perez Zalduondo, German Gan Quesada

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Music criticism 1900 1950

By Jordi Ballester, German Gan Quesada

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This monograph focuses on the situation of Music Criticism throughout the first half of the twentieth century, Adorno, Stuckenschmidt, Stravinsky, Hindemith, Messiaen, Stage Music, Ballet, Opera, A...

Cristobal Halffter

By German Gan Quesada

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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.