Michael Hardwick Books

Dickens's England

By Michael Hardwick

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The Sherlock Holmes Companion

By Michael Hardwick, RH Value Publishing

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This indispensable Companion brings together all the ingredients - a Who's Who, plots of each story, biographies of Holmes and Watson, an anthology of their aphorisms and a chapter on their relatio...

The Private Life of Dr. Watson

By Michael Hardwick

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The Four Musketeers

By Michael Hardwick

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The cedar tree

By Michael Hardwick

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The Cedar Tree

By Michael Hardwick

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The cedar tree, a bough breaks

By Michael Hardwick

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Chinese detective

By Michael Hardwick

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The Chinese Detective

By Michael Hardwick

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Bergerac

By Michael Hardwick

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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.