Julian Porteous Books

After the heart of God

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"This book on the priesthood is a reflection on the times and the needs of the Church and society. It is offered to priests to assist them in their own reflection on their lives and ministry, and i...

A New Wine Fresh Wineskins

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After the Heart of God

By Julian Porteous

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Little Black Schoolbook Vol. 1

By Mark Lopez, Julian Porteous

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After the Heart of God

By Julian Porteous

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What sort of priest is needed for the third millennium? The cultural and ecclesial landscape has changed so dramatically over the past fifty years. There are new and challenging forces at work infl...

Foundations

By Julian Porteous

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Becoming Missionary Disciples

By Julian Porteous

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The new evangelisation

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Prayers for those in Spiritual Affliction

By Bishop Julian Porteous

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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.