Teofilo F. Ruiz Books

Medieval Europe and the World: From Late Antiquity to Modernity, 400-1500

By Winks Robin W.

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Medieval Europe and the World: From Late Antiquity to Modernity, 400-1500

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Spanish Society 1400 1600 Social History of Europe

By Teofilo F. Ruiz

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Spanish Society 1400 1600

By Teofilo Ruiz

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"Spanish Society depicts a complex and fascinating country in transition from the late Middle Ages to modernity. It describes every part of society from the gluttonous nobility to their starving pe...

From Heaven to Earth

By Teofilo F. Ruiz

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The terror of history

By Teofilo F. Ruiz

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Crisis and continuity

By Teofilo F. Ruiz

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The City and the Realm

By Teofilo F. Ruiz

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The Western Mediterranean and the World

By Teofilo F. Ruiz

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Spain s centuries of crisis

By Ruiz Teofilo F, Teofilo F. Ruiz

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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.