Robert Irwin Books

"Ibn Khaldun (1332-1406) is generally regarded as the greatest intellectual ever to have appeared in the Arab world--a genius who ranks as one of the world's great minds. Yet the author of the Muqa...

The Middle East in the Middle Ages

By Robert Irwin

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For Lust of Knowing

By Robert Irwin

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The landlord's troubleshooter

By Robert Irwin

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The home inspection troubleshooter

By Robert Irwin

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Buy right, sell high

By Robert Irwin

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The Middle East in the Middle Ages

By Robert Irwin

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Dangerous Knowledge

By Robert Irwin

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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.