Peralba, Raúl, Tr Books

Las 22 Leyes Inmutables Del Marketing

By Jack Trout, Al Ries, Ries, Trout, Jack, Ries, Al, Peralba, Raúl, Tr, González De Río, Raúl, Tr

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Las 22 leyes inmutables del marketing son fruto de los más de 2 años de experiencia como consultores de Al Ries y Jack Trout. En esta breve, pero intensa obra, describen las reglas definitivas que...

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.