Gerald O Collins Books

A concise dictionary of theology

By Gerald O Collins

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The case against dogma

By Gerald O Collins

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Catholicism

By Gerald O Collins, Mario Farrugia

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How did Roman Catholicism and its beliefs and practices come to be what they are? This lively and readable account provides an up-to-date introduction, explaining what is distinctively Catholic. Th...

Retrieving fundamental theology

By Gerald O Collins

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Tripersonal God

By Gerald O Collins

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The Easter Jesus.

By Gerald O Collins

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Has dogma a future?

By Gerald O Collins

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Fundamental theology

By Gerald O Collins

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Fundamental theology

By Gerald O Collins

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Jesus risen

By Gerald O Collins

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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.