Carmen Gurruchaga Books

El fin de ETA

By Carmen Gurruchaga

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La Prueba

By Carmen Gurruchaga

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La prueba

By Carmen Gurruchaga

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El arbol y las nueces

By Isabel San Sebastian

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¿Cuál es la auténtica actitud del PNV y de su presidente, Xavier Arzalluz, ante el terrorismo de ETA? ¿Lo rechazan o, por el contrario, comprenden y justifican que se produzcan esos crímenes que se...

La maestra

By Carmen Gurruchaga, Marilo Montero

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Los Jefes de eta

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Los jefes de ETA

By Carmen Gurruchaga

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Los Complices de Eta Politicos Empresarios Francia Iglesia Vasca y Sociedad Nacionalista

By Carmen Gurruchaga

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Rodrigo Rato

By Carmen Gurruchaga

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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.