Michael O'Dea Books

HackNotes(tm) Windows Security Portable Reference

By O Dea Michael

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Jean-Jacques Rousseau

By Michael O Dea

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This new study of Jean-Jacques Rousseau takes his articles on music for the Encyclopedie as its starting point and suggests that, although neglected by most writers on Rousseau, they provide a uniq...

Jean Jacques Rousseau

By Michael O Dea

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Nations and nationalisms

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Rousseau et les philosophes

By Michael O Dea

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An analysis of Rousseau's interactions with the 'philosophes' and how this shaped his political ideas in the age of Enlightenment.

Jean Jacques Rousseau en 2012

By Michael O Dea

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Sunfire

By O Dea Michael

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Sunfire

By O Dea Michael

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Turn your head

By O Dea Michael

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Turn your head

By O Dea Michael

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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.