David Unwin Books

Fifty Years with Father: A Relationship

By David Unwin

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The Pterosaurs: From Deep Time

By David M. Unwin

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Geographic Information Analysis

By David O Sullivan, David J. Unwin

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Visualization in Geographical Information Systems

By David Unwin, Hilary M. Hearnshaw

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Mysteries through the ages

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Explores natural and man-made mysteries of the past in the light of the latest technology. Includes the Egyptian pyramids, the dinosaurs, and lost civilizations.

Mysteries of prehistoric life

By David Unwin

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Explores various theories of evolution and unravels the mysteries of prehistoric time, from the first life on earth to the appearance of human beings, using modern scientific evidence and methods.

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.