Ernesto Frers Books

Siempre se ha preguntado el porqué de la existencia de la piraterí́a, sus audaces y temibles ataques tanto en alta mar como en tierra firme. Bandoleros unos y de origen noble otros, que sucumbieron...

Criminales nazis del exterminio

By Ernesto Frers

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"Perfiles de algunos de los principales arquitectos y ejecutores principales del Holocausto, esta crónica ofrece un retrato escalofriante de la crueldad extrema del régimen nazi. Las historias de l...

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.