Fraser Simpson Books

A year of cranial conundrums designed to push your neurons to the limit. Sanctioned by Mensa, the internationally famous high-IQ society, 365 Brain Puzzlers is a calendar that’s not for the (intell...

Mensa 365 Brain Puzzlers 2013 Page-A-Day Calendar

By Mark Danna, Fraser Simpson

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Mensa 365 Brain Puzzlers 2015 Page-A-Day Calendar

By Mark Danna, Fraser Simpson

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Mensa 365 Brain Puzzlers 2012 Calendar

By Mark Danna, Fraser Simpson

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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.