J. L. Pio Abreu Books

O bailado da alma

By J. L. Pio Abreu

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A queda dos machos

By J. L. Pio Abreu

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"Nas 20 cartas contidas no presente volume, o Prof. J.L. Pio Abreu, autor de Como Tornar-se Doente Mental e Quem Nos Faz Como Somos dirige-se às mulheres, procurando convencê-las de que os homens p...

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.