Brian O'Sullivan Books

Prognostic Factors in Cancer

By Brian O Sullivan, Mary K. Gospodarowicz, Leslie H. Sobin

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Examines the prognostic factors associated with each cancer site and provides insight into potential treatments and therapies. The text is an extension of the International Union Against Cancer's (...

Fionn Defence of Rath Bladhma

By Mr Brian O Sullivan

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Beara

By Brian A O Sullivan

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Fionn Traitor of Dun Baoiscne The Fionn mac Cumhal Series

By Mr Brian A O Sullivan

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Puppeteer

By Elizabeth Brizzi

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Irish Imbas

By Maria Gethins, Mr Brian A O Sullivan, Sheelagh Russell Brown, Marc McEntegart, Sighle Meehan, Coral Atkinson

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UICC Manual of Clinical Oncology

By Martin Fey, James D. Brierley, Jan Vermorken, Shao Hui Huang, Raphael E. Pollock

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UICC Manual of Clinical Oncology

By Martin Fey, James D. Brierley, Jan Vermorken, Shao Hui Huang, Raphael E. Pollock

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Mr. Nilsen at the Rodeo

By Julie Urtz, Brian O Sullivan

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From Crisis to Crisis

By Brian O Sullivan

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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.