John Behr Books

Becoming Human
Becoming Human

By John Behr

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The role of death in life
The role of death in life

By John Behr, Conor Cunningham

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The relation between life and death is a subject of perennial relevance for all human beings -- and indeed, the whole world and the entire universe, in as much as, according to the saying of ancien...

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The Role of Death in Life
Gregory of Nyssa
Gregory of Nyssa

By John Behr

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John the Theologian and His Paschal Gospel
Selected Essays Volume I
Selected Essays Volume II
John the Theologian and His Paschal Gospel
Origen
Origen

By John Behr

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Case Against Diodore and Theodore

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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.

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