Graham Walker Books

Miniature Refrigerators for Cryogenic Sensors and Cold Electronics

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Cryocoolers: Part 2: Applications

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The Hamelin Incident Acting Edition

By Graham Walker

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Dances in the Street

By Graham Walker

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Moral foundations of constitutional thought

By Walker Graham

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A history of the Ulster Unionist Party

By Graham Walker

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This is a history of the development of the Ulster Unionist Party from its beginnings in the opposition to Irish Home Rule to the present day. It outlines why the Ulster Unionist Party is so centra...

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.