Harris Mark Books

City of discontent

By Harris Mark

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The Doctor Who technical manual

By Harris Mark

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A guide to the technological fantasies, including advanced tools, weapons, computers, spaceships, robots, and lifelike human clones, introduced on the long-running British science fiction televisio...

The Doctor Who technical manual

By Harris Mark

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Grave matters

By Harris Mark, Mark Harris

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By the time Nate Fisher was laid to rest in a woodland grave sans coffin in the final season of Six Feet Under, Americans all across the country were starting to look outside the box when death cam...

The Southpaw

By Harris Mark

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The Southpaw

By Harris Mark

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Trumpet to the world

By Harris Mark

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Bang the drum slowly

By Harris Mark

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A ticket for a seamstitch

By Harris Mark

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It looked like for ever

By Harris Mark

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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.