Alberto Ferreiro Books

The Twelve Prophets

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"The Ancient Christian Commentary on Scripture does what very few of today's students of the Bible could do for themselves. With the aid of computer technology, the vast array of writings from the...

The Visigoths in Gaul and Iberia

By Alberto Ferreiro

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Simon Magus in patristic, medieval, and early modern traditions

By Alberto Ferreiro

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The Visigoths

By Alberto Ferreiro

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The Visigoths in Gaul and Spain A.D. 418 711

By Alberto Ferreiro

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The Devil Heresy and Witchcraft in the Middle Ages

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Goths

By Alberto Ferreiro

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Twelve Prophets

By Alberto Ferreiro

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Twelve Prophets

By Alberto Ferreiro, Thomas C. Oden

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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.