Nuno Valerio Books

Os orcamentos no parlamento portugues

By Nuno Valerio, Ana Bela Nunes, Carlos Bastien, Maria Eugenia Mata

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Portuguese historical statistics

By Nuno Valerio

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Each chapter contains essays providing the backgroung for the historical statistics. Chapter 12, covers the evolution of Portugal from amonarchy to a modern political state with registers of the e...

Portuguese historical statistics

By Nuno Valerio

Average: 0.00, 0 Ratings

Each chapter contains essays providing the backgroung for the historical statistics. Chapter 12, covers the evolution of Portugal from amonarchy to a modern political state with registers of the e...

Portuguese historical statistics

By Nuno Valerio

Average: 0.00, 0 Ratings

Each chapter contains essays providing the backgroung for the historical statistics. Chapter 12, covers the evolution of Portugal from amonarchy to a modern political state with registers of the e...

Em directo do ISEG

By Nuno Valerio, Antonio Romao, Manuel Brandao Alves

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As financas publicas portuguesas entre as duas guerras mundiais

By Nuno Valerio

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Asian Imperial Banking History

By Nuno Valerio, Kazuhiko Yago, Hubert Bonin

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Colonial and Imperial Banking History

By Nuno Valerio, Hubert Bonin

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Colonial and Imperial Banking History

By Nuno Valerio, Hubert Bonin

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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.