Sean Brennan Books

The Priest Who Put Europe Back Together

By Sean Brennan

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Bridie s boy

By Sean Brennan

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Memoir of childhood in an Irish Catholic family of 13 with few resources, plenty of mayhem and lots of love from Bridie the matriarch.

The politics of religion in Soviet occupied Germany

By Sean Brennan

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The politics of religion in Soviet-occupied Germany

By Sean Brennan

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Priest Who Put Europe Back Together

By Sean Brennan

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Look Out below

By Francis L. Samspon, Sean Brennan, Philip Hannan

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Look Out below a Story of the Airborne by a Paratrooper Padre

By Sean Brennan, Francis L. Sampson, Philip M. Hannan

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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.