Patricia Vieira Books

"Portuguese Film, 1930-1960: The Staging of the New State Regime provides groundbreaking analysis of Portuguese feature films produced in the first three decades of the New State (Estado Novo), a r...

Portuguese Film 1930 1960

By Patricia Vieira

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Existential Utopia

By Patricia Vieira, Michael Marder

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Existential Utopia

By Patricia Vieira, Michael Marder

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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.