Mark Harris Books

It looked like for ever

By Mark Harris, Harris Mark

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The Doctor Who Technical Manual

By Mark Harris, 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...

Speed

By Mark Harris, Harris Mark

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Pictures at a Revolution

By Mark Harris

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City of discontent

By Mark Harris, Harris Mark

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The Doctor Who Technical Manual

By Mark Harris, Harris Mark

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The Southpaw

By Mark Harris, Harris Mark

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The Southpaw

By Mark Harris, Harris Mark

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The tale maker

By Mark Harris, Harris Mark

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Set in academe, in an unnamed city, The Tale Maker, by Mark Harris, features the careening careers and psyches, lusts and ambitions of two men - one named Rimrose, a brilliant student and teacher a...

National Museum, Kuala Lumpur

By Mark Harris

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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.