Yuyú Guzmán Books

Viejas estancias en el Pago de Magdalena

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"Description of the landed estates (estancias) spread throughout the rural municipality of Tandil, province of Buenos Aires. Good basic materials for an investigation of the origin of landed aristo...

Viejas estancias de la Patagonia

By Yuyu Guzman

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La estancia colonial rioplatense

By Yuyu Guzman

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Las Estancias del Tandil Seriia

By Yuyu Guzman

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Estancias de Azul

By Yuyu Guzman

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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.