Otavio Pandolfo Books

Osgemeos

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OSGEMEOS: Segredos [Secrets] is the first panoramic exhibition of the artistic duo made up by twin brothers Otávio and Gustavo Pandolfo (São Paulo, 1974). The exhibition comprises more than 1000 it...

Os Gemeos

By Gustavo Pandolfo, Otavio Pandolfo, Pedro Alonzo

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Brazilian twin brothers Otavio and Gustavo Pandolfo, best known as Os Gemeos, are credited as leaders of graffiti and urban art in Brazil. Their narrative works synthesise their everyday lives, one...

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.

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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.