Marq De Villiers Books

Down the Volga in a time of troubles

By Marq De Villiers

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The End: Natural Disasters, Manmade Catastrophes, and the Future of Human Survival

By Marq De Villiers

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Our Way Out

By Marq De Villiers

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Global warming, energy shortages, overpopulation — it's no wonder that as a society, we're in an apocalyptic mood. Out of an endless stream of gloomy prognoses for humanity's future, we have...

Water

By Marq De Villiers

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Back to the Well

By Marq De Villiers

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Back to the Well

By Marq De Villiers, Michael Haynes

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End

By Marq De Villiers

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Longbow the Schooner and the Violin

By Marq De Villiers

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Longbow the Schooner and the Violin

By Marq De Villiers

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The Heartbreak Grape

By Marq De Villiers

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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.