Mark O'Brien Books

De Valera and Fianna Fail and the Irish Press

By O Brien Mark., Mark O Brien

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xxii, 266 p., [8] p. of plates : 24 cm

The Irish times

By O Brien Mark.

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Independent newspapers

By Mark O Brien, Kevin Rafter

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"For over a century, Independent Newspapers has been the most successful media organization in Ireland. From William Martin Murphy to Tony O'Reilly, the newspaper group has long been at the centre...

Political Censorship and the Democratic State

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Political Censorship and the Democratic State

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Perish the Unprivileged Orders

By O Brien Mark., Mark O Brien

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More Love and Baseball

By Mark Fernbach Susan O Brien

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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.