Douglas Jacoby Books

Foundations For Faith Old Testament Survey Handbook

By Douglas Jacoby

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Shining Like Stars

By Douglas Jacoby

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The Letters of James Peter John Jude Life to the Full

By Douglas Jacoby

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Jesus and Islam

By Douglas A. Jacoby

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Jesus and Islam launches us into the Muslim world, explaining not only the origin of the religion, but also the teachings of its scriptures, the Qur'an. Further sections deal with terrorism and the...

The God Who Dared Vol. 1

By Douglas Jacoby

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The Spirit

By Douglas Jacoby

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True and Reasonable

By Douglas Jacoby

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Shining Like Stars

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Q A

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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.