Ronaldo Barthem Books

The Catfish Connection

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Smithsonian Atlas of the Amazon

By Michael Goulding, Efrem Jorge Gondim Ferreira, Ronaldo Barthem

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"The Smithsonian Atlas of the Amazon provides the first comprehensive view of this massive river system, revealing the rainforest as never seen before with 150 color maps and almost 300 stunning ph...

O manejo da pesca dos grandes bagres migradores

By Nidia Noemi Fabre

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Un ecosistema inesperado

By Ronaldo Barthem

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Rio Amazonas

By Cesar Vega, Michael Goulding, Efrem Jorge Gondim Ferreira, Ronaldo Barthem, Walter H. Wust

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Os bagres balizadores

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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.