Roberto Castillo Books

The Bugler El Corneta
LA Guerra Mortal De Los Sentidos
La tinta del olvido
La tinta del olvido

By Roberto Castillo

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Del siglo que se fue
Del siglo que se fue

By Roberto Castillo

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Anita, la cazador de insectos
Anita, la cazador de insectos

By Roberto Castillo

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A Honduran screenplay of a movie released in 2002, based on a story written by Castillo in 1977 and adapted for the cinema by Hispano Duron in 1999.

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Traficante de angeles
Traficante de angeles

By Roberto Castillo

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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.

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