John R. Macduff Books

The Bow In The Cloud

By John R. Macduff

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The Bow In The Cloud ; The First Bereavement

By Simon J. Kistemaker, Simon Kistemaker, John R. Macduff

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1. Manuscripts -- I. Gospel Of Thomas -- Ii. Dead Sea Scrolls -- Iii. Papyri -- 2. Readings -- I. Translations -- Ii. Textual Criticism -- Iii. Literary Criticism -- 3. Criticism -- I. Source Criti...

Clefts Of The Rock Or, The Believer'S Grounds Of Confidence In Christ

By John R. Macduff, J. R. MacDuff

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Memories Of Bethany

By John R. Macduff

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The Night Watches

By John R. Macduff, John MacDuff

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The Morning Watches

By John R. Macduff, John Macduff, John MacDuff

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Communion Memories

By John R. Macduff, John Macduff

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Bow In The Cloud

By John R. Macduff

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Bow In The Cloud

By John R. Macduff

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Healing Waters Of Israel

By John R. Macduff

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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.