Alfred J. Andrea Books

Encyclopedia of the Crusades

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"This A-to-Z encyclopedia explores the phenomenon of the Crusades in all of its complexity, ranging from the classic numbered crusades in the Middle East to the Reconquista in Spain, and from the B...

The human record

By Alfred J. Andrea

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The human record

By Alfred J. Andrea

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The human record

By Alfred J. Andrea

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The human record

By Alfred J. Andrea

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Human Record

By Andrea

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The Medieval Record: Sources of Medieval History

By Alfred J. Andrea

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The human record

By Alfred J. Andrea

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The Human Record

By James H. Overfield, Alfred J. Andrea, Alfred H. Andrea

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Using The Human Record Sources of Global History Suggestions from the Editors

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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.