Mario Kölling Books

Public Security in Federal Polities is the first systematic and methodical study to bring together the fields of security studies and comparative federalism. The volume explores the symbiotic relat...

Federalism and Education

By Mario Kolling, Kenneth K. Wong, Diana Chebenova, Felix Knupling

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Federalism and Education

By Mario Kolling, Kenneth K. Wong, Diana Chebenova, Felix Knupling

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La ley de transparencia acceso a la informacion publica y buen gobierno

By Mario Kolling, Sabrina Ragone, Maria Isabel Wences Simon

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Centro Presidencial

By Salvador Peralta, Jose Luis Mendez, Mario Kolling, Botero Jaramillo Felipe, Maria Eugenia Coutinho, Marcelo Camerlo, Magna Inacio, Bert Rockman, Luis Bernardo Mejia, Martin Smith, Alejandro Bonvecchi, Peter M. Siavelis, Jorge Lanzaro, Juan Luis Paniagua Soto

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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.