Robert M. Doran Books

"Psychic Conversion and Theological Foundations is the work of a theologian taking a professional interest in the science of depth psychology and its methods. But it also discloses the contribution...

Psychic conversion and theological foundations

By Robert M. Doran

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The Trinity in history

By Robert M. Doran

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"The Trinity in History is a two-volume work that builds on the thought of Bernard Lonergan to construct a unified field structure for systematic work in theology. Building on his successful and th...

The Trinity in history

By Robert M. Doran

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Theology and the Dialectics of History

By Robert M. Doran

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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.