Martin Adams Books

Sonic the Hedgehog in Robotnik s Laboratory

By Martin Adams

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Sonic the Hedgehog in the Fourth Dimension

By Martin Adams

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Check out the second in a brand-new series featuring the world's most popular hedgehog. As part of his latest plan to rule Mobius, the dastardly Dr. Robotnik is sending his robots back through tim...

Sonic the Hedgehog and the Silicon Warriors

By Martin Adams

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Here it is! The third book in a brand-new series featurning the world's most popular hedgehog. Sonic's pals - even that feisty fox Tails - have been sucked inside computers, and infected with a di...

Sonic the Hedgehog in Castle Robotnik

By Martin Adams

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It's the FrankenSonic monster! In this, the fourth book in the series, Doctor Robotnik plots to defeat that pesky hedgehog once and for all - by building a bolt-together version of Sonic. Wherewol...

Complete Advanced Level Mathematics Complete Advanced Level Mathem

By Jefferey Trim, June Haighton, Martin Adams

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Advanced Level Mathematics Tutorials

By Jeff Trim, June Haighton, Live Learning, Martin Adams

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Advanced Level Mathematics Tutorials Complete Advanced Level Mathematics Series

By Jefferey Trim, June Haighton, Live Learning, Martin Adams

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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.