Mark O Connell Books

To be a machine

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"A globe-spanning investigation into the Transhumanist movement, considering the tech billionaires, scientific luminaries, and DIY body-hackers attempting to prolong, improve, and ultimately transc...

The Good Father

By Mark O Connell Undifferentiated, Mark O Connell

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Modern brides modern grooms

By Mark O Connell

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Modern brides modern grooms

By Mark O Connell

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"How to make any wedding liberating, brave, and sexy. This post-DOMA book is for any couple-same or opposite sex-seeking a personalized wedding that dignifies the relationship and the individual se...

Symbols signs visual codes

By Mark O Connell

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Makine Olmak Mutevazi Sorunumuz Olumluluk Ve Bunu Cozmek Icin Siborglar Utopyacilar Hackerlar Futuristler Arasinda Bir Yolculuk

By Mark O Connell

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The Marriage Benefit

By Mark O Connell Undifferentiated, Mark O Connell

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Team the Titans Remember

By Mark O Connell

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Team the Titans Remember

By Mark O Connell

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Team the Titans Remember

By Mark O Connell

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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.