Eric Frattini Books

Los Cuervos Del Vaticano

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Desde 1566 existe la Santa Alianza y su contraespionaje de Soldalitium Pianum. Desde Pio XII a Juan Pablo II, estelibro relata cinco siglos de operaciones encubiertas del servicio de espionaje pont...

Secretos Vaticanos De San Pedro a Benedicto XVI Vatican Secrets From Saint Peter to Benedict XVI Cronicas De La Historia History Chronicles

By E. Frattini

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CIA

By Eric Frattini

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KGB

By Eric Frattini

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MI6 Historia de la firma

By Unknown

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I papi e il sesso

By Eric Frattini

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El quinto mandamiento

By Eric Frattini

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El oro de Mefisto

By Eric Frattini

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El quinto mandamiento

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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.