Michael O'Hagan Books

The Fuzzy Systems Handbook, Second Edition: A Practitioner's Guide to Building, Using, and Maintaining Fuzzy Systems

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The Fuzzy Systems Handbook, Second Edition provides a hands-on approach to the architecture, function, and operation of fuzzy logic, the fast-growing alternative to binary logic. Intended for anyon...

Beyond the Ands and Buts

By Pat Haynes, Michael O Hagan, Peter Evans Undifferentiated

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The business guide to the 1991 budget of the European Communites

By Michael O Hagan

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To Steal an Air Force

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Guide to the 1989 General Budget of the Commission of the European Communities and the Other Community Institutions

By Michael O Hagan, Michael O Hapan

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How Victoria Bear Lost His Honey Lake

By Michael Ill Penny Woodworth O Hagan

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Creating a Wonderful Life

By Michael O Hagan

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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.