Ulrich L. Lehner Books

The Catholic enlightenment

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"Whoever needs an act of faith to elucidate an event that can be explained by reason is a fool, and unworthy of reasonable thought." This line, spoken by the notorious 18th-century libertine Giacom...

Enlightened Monks: The German Benedictines, 1740-1803

By Ulrich L. Lehner

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Kontroverse Theologie

By Giovanni B. Sala

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Think Better

By Ulrich L. Lehner

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God Is Not Nice

By Ulrich L. Lehner

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Gott Ist Unbequem

By Ulrich L Lehner

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Dios no mola

By Ulrich L. Lehner, Scott Hahn, Helena Faccia Serrano

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Kants Vorsehungskonzept Auf Dem Hintergrund Der Deutschen Schulphilosophie Und theologie Brill s Studies in Intellectual History

By Ulrich L. Lehner

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Inner Life of Catholic Reform

By Ulrich L. Lehner

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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.