Simon Guerrier Books

The Scientific Secrets of Doctor Who

By Simon Guerrier, Dr. Marek Kukula

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Doctor Who: The Book of Whoniversal Records: Official Timey-Wimey Edition

By Simon Guerrier

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Doctor Who: Paper Dolls

By Christel Dee, Simon Guerrier

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Top Trumps

By Ladybird Ladybird

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Doctor Who: The Time Travellers (Doctor Who (BBC Paperback))

By Simon Guerrier

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When the TARDIS touches down in London, 2006, schoolteachers Ian and Barbara are eager to explore their own future. But they have arrived in the middle of a war, a war that has left London a ruin....

LEGO

By Kate Lloyd, Simon Guerrier, Jonathan Green

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Have you ever wondered which LEGO minifigure had the first double-sided head? Or which one was the first to have a printed torso or peg leg? Discover all the answers to these questions and more in...

Doctor Who

By Simon Guerrier

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Doctor Who Shadow of Death

By Simon Guerrier, Frazer Hines

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Being Human

By Lenora Crichlow, Simon Guerrier

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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.