Michael McMahon Books

Flowering After Frost

By Philip Alan Barker

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Silent alliance

By James M. Friedman

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Why do stars twinkle?

By Michael McMahon

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Information about our solar system and the universe.

Two rainbows

By Sophie Masson

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All the colors of the rainbow are explored against the striking backdrop of two different worlds. Lyrical text tells the story of a girl who has moved from a farm into the city, and learns that col...

The Murder of Thomas Dawson Bateson Monaghan 1851 Maynooth Studies in Local History

By Michael McMahon

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Saints

By Michael McMahon

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My friend the enemy

By PAUL BRISCOE

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My friend the enemy

By Paul Briscoe

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On a visit to Germany in 1934, Nora Briscoe became captivated by National Socialism, so much so that two years later she entrusted her six-year-old son Paul to a German foster family. When war was...

A Z of Health and Safety for High Risk Environments

By Michael McMahon

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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.