John O'Hagan Books

In Sickness and in Health

By John O Hagan And John Gwyther Richards And Doctors Health Advisory Service

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Christmas With Southern Living 1993

By Oxmoor House., John O'Hagan, Barbara Ball, Sunset Books, Vicki L. Ingham

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Filled with decorating ideas, gifts, and kitchen-tested recipes from the South, this book brings the best of Southern hospitality to the holiday season with instructions for the projects and recipe...

The Economy of Ireland

By John O Hagan, Francis O Toole

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The Song of Roland

By Anonymous

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Enhancing Participation in the Arts in the EU

By Juan Prieto Rodriguez, Victor Ginsburgh, John O Hagan, Victoria M. Ateca Amestoy, Isidoro Mazza

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Christmas With Southern Living 1992

By Oxmoor House., John O'Hagan, Steve Newman, Vicki Ingham, Sunset Books, Vicki L. Ingham, Connie Formby

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Song of Roland

By John O Hagan

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Song of Roland

By John O Hagan

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Enhancing Participation In The Arts In The EU

By Author, Victor Ginsburgh, John O'Hagan, Victoria M. Ateca-Amestoy, Isidoro Mazza, Juan Prieto-Rodriguez

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In this book, participation in the arts is analyzed as a substantial contributory factor to European citizenship, and also as a tool for improving individual and societal wellbeing through educatio...

Enhancing Participation in the Arts in the EU

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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.