Selina O Grady Books

Great spirits 1000 2000

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This series of essays provides thumbnail biographies of key figures in Christianity's last thousand years. The entries provide basic information about the person's life, development, era and ideas....

And Man Created God

By Selina O Grady

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And man created God

By Selina O Grady

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At the time of Jesus' birth, thousands of people were leaving their families and tribes behind and flocking into brand new multi-ethnic cities. The world was undergoing the first phase of globaliza...

Ve Insan Tanri yi Yaratti

By Selina O Grady

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Spiritual Stars of the Millennium

By Libby Purves, Selina O Grady

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And Man Created God

By Selina O Grady

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And Man Created God

By Selina O Grady

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And Man Created God

By Selina O Grady

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In the Name of God The Role of Religion in the Modern World

By Selina O Grady

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In the Name of God The Role of Religion in the Modern World

By Selina O Grady

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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.