Michael Underwood Books

A dangerous business

By Michael Underwood

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The seeds of murder

By Michael Underwood

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When a young boy disappears and the prime suspect commits suicide, the case is put to rest. Then another tragedy strikes, which sheds new light on the mystery.

Guilty conscience

By Michael Underwood

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A clear case of suicide

By Michael Underwood

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Crime upon crime

By Michael Underwood

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Crooked wood

By Michael Underwood

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Death at Deepwood Grange

By Michael Underwood

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Death in camera

By Michael Underwood

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Double jeopardy

By Michael Underwood

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The fatal trip

By Michael Underwood

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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.