Joao Pedro Marques Books

The Sounds of Silence

By Joao Pedro Marques

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O estranho caso de Sebastiao Moncada

By Joao Pedro Marques

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Do outro lado do mar

By Joao Pedro Marques

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"Historical novel about slavery in Angola and Brazil which takes place starting in 1833. The main character is a doctor who leaves Lisbon and moves to or visits Angola and Brazil." -- cataloger's s...

Os sons do silencio, o Portugal de oitocentos e a abolicao do trafico de escravos

By Joao Pedro Marques

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Sa da Bandeira e o fim da escravidao

By Joao Pedro Marques

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Who Abolished Slavery

By Joao Pedro Marques, Pieter C. Emmer, Seymour Drescher

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Who Abolished Slavery

By Joao Pedro Marques, Pieter C. Emmer, Seymour Drescher

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Revoltas escravas

By Joao Pedro Marques

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Os dias da febre

By Joao Pedro Marques

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Uma fazenda em Africa

By Joao Pedro Marques

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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.