Jose Calvo Poyato Books

La orden negra
La orden negra

By Jose Calvo Poyato

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El manuscrito de Calderon
El manuscrito de Calderon

By Jose Calvo Poyato

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Comienza la prometedora trilogía de Pedro Capablanca, un peculiar 'detective privado', que presta sus servicios en tiempos del reinado de Felipe IV. Se trata de un caso difícil: tras levantarse el...

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El ritual de las Doncellas The Ritual of the Ladies
La Biblia Negra
La Biblia Negra

By Jose Calvo Poyato

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Felipe V, el primer Borbon
El Desastre del 98
El Desastre del 98

By Jose Calvo Poyato

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Enrique IV el Impotente y el final de una epoca
Felipe IV y el ocaso de un imperio
La vida y la epoca de Carlos II el hechizado La vida y la epoca de
El sueno de Hipatia
El sueno de Hipatia

By Jose Calvo Poyato

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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.

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