Tim S. Perry Books

The Blessed Virgin Mary

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It is commonly assumed that all religions are essentially alike, that they are all common members of the genus Religion. But what if religions are not fundamentally similar after all? What if, on t...

Radical Difference

By Tim S. Perry

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Blessed Virgin Mary

By Daniel Kendall, Tim Perry

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He ascended into Heaven

By Tim S. Perry

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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.

Tim S. Perry Books

The Blessed Virgin Mary

Blessed is she

Mary for Evangelicals

The Legacy of John Paul II

Blessed Is She

Radical Difference

Radical Difference

Radical Difference

Blessed Virgin Mary

He ascended into Heaven

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

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