Andres Gambra Gutierrez Books

Alfonso VI

By Javier Alvarado Planas, Ignacio Ruiz Rodriguez, Irene Ruiz Albi, Manuel Gonzalez Jimenez, Vicente Angel Alvarez Palenzuela, Rica Amran, Armando Besga Marroquin, Federico Gallegos, Gonzalo Martinez Diez, Fernando Suarez Bilbao, Andres Gambra Gutierrez, Gonzalo Oliva Manso, Teresa Martialay Sacristan

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El municipio medieval

By Isabel Ramos Vazquez, Consuelo Guanto Jimenez, Aniceto Masferrer, Javier Alvarado Planas, Maria Del Mar Sanchez Gonzalez, Carmen Saenz Berceo, Luz Valle, Leandro Martinez Penas, Beatriz Badorrey Martin, Manuel Estrada, Maria Magdalena Martinez Almira, Jesus Gonzalez Garzas, Miguel Angel Chamocho Cantudo, Juan Sainz Guerra, Juan Carlos Dominguez Nafria, Jose Cano, Carmen Losa Contreras, Oleg Aurov, Regina Maria Perez Marcos, Fernando Suarez Bilbao, Andres Gambra Gutierrez, Gonzalo Oliva Manso, Rafael Sanchez Domingo

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Los fueros de Sepulveda y las sociedades de frontera. II Symposium Internacional de Estudios Historicos de Sepulveda 2006

By Fernando Suarez Bilbao, Andres Gambra Gutierrez

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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.