Mary Ann Constantine Books

The Truth Against the World

By MARY ANN CONSTANTINE

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Ballads in Wales Baledi Yng Nghymru

By Mary Ann Constantine

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Breton Ballads

By Mary Ann Constantine

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The breathing

By Mary Ann Constantine

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Star shot

By Mary Ann Constantine

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Both fable and mystery, 'Star-Shot' is set in a small world of parks and galleries around Cardiff's national museum, in a time not quite our own. As their paths cross, characters reveal stories of...

Miracles and Murders

By Mary Ann Constantine, Eva Guillorel

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Curious Travellers

By Mary Ann Constantine

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Travels in Revolutionary France and a Journey Across America

By Mary Ann Constantine, Paul Frame

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Footsteps of Liberty and Revolt

By Dafydd Johnston, Mary Ann Constantine

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Wales and the French Revolution Footsteps of Liberty and Revolt

By Mary Ann Constantine

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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.