Vincent Twomey Books

Moral theology after Humanae Vitae

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"The author discusses some of the major developments in fundamental moral theology which were sparked off by the publication of the hugely controversial encyclical, Humanae Vitae (1968), as well as...

The mystery of Christ in the fathers of the church

By Janet Elaine Rutherford, Vincent Twomey, David Woods

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The End of Irish Catholicism

By Vincent Twomey, D. VINCENT TWOMEY

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Apostolikos thronos

By Vincent Twomey

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Vom Wiederauffinden der Mitte. Grundorientierungen. Texte aus vier Jahrzehnten.

By Stephan Otto Horn, Vinzenz Pfnur, Joseph Ratzinger, Vincent Twomey

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Apostolikos Thronos

By Vincent Twomey

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Thomas Finan

By Vincent Twomey

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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.