Fernando Guerra Books

Hospital da Luz e casas da cidade

By Carsten Land, Fernando Guerra, Catherine Slessor

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Novo morar urbano

By Fernando Serapiao, Fernando Guerra

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Recent transformations drive a "new urban living" of the middle and upper middle class in large Brazilian cities. From the solet out, the scenery was stimulated by the paradigm shift encamped by th...

As duas faces de um mesmo monumento

By Fernando Guerra

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COVID 19. Normas de Orientacao Clinica Medicina Dentaria

By Fernando Guerra

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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.