Robert J. Harris Books

June 1940. As German troops pour across France, the veteran soldier and adventurer Richard Hannay is called back into service. In Paris an individual, code-named 'Roland, ' has disappeared and is a...

Thor is locked in my garage

By Robert J. Harris

Average: 0.00, 0 Ratings

"Brothers Greg and Lewis are enjoying a heatwave in the summer holidays - until Loki, the god of mischief, buries their town, St Andrews, in a huge blizzard! Loki is determined to conquer the unive...

Odin blew up my TV

By Robert J. Harris

Average: 0.00, 0 Ratings

A strange haar blows into St Andrews' harbour one morning, freezing its inhabitants in a magical mist. The fate of St Andrews, and the ENTIRE UNIVERSE, rests with our reluctant heroes. Will they re...

The Thirty One Kings

By Robert J. Harris

Average: 0.00, 0 Ratings

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.