Roger E. Van Harn Books

Explaining the Reformed perspective

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Examines eight areas of differences in thought and practices in the Christian church, and offers a defense of and an explanation of the approach in these areas of Reformed theology and practice.

Pew Rights

By Roger E. Van Harn

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Pew Rights

By Roger E. Van Harn

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Psalms for preaching and worship

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Exploring and Proclaiming the Apostles Creed

By Roger E. Van Harn

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The Lectionary Commentary Theological Exegesis for Sunday s Texts

By Roger E. Van Harn

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Lectionary Commentary

By Roger E. Van Harn, Colin Gunton, Richard A. Burridge

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Lectionary Commentary

By Roger E. Van Harn, Gunton

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Lectionary Commentary

By Roger E. Van Harn

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Exploring and Proclaiming the Apostle s Creed

By Roger E. Van Harn

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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.