Robert Jeffrey Books

For more than 100 years Glasgow was known worldwide for its gangsters and villains. This book traces the history of the city's gangland violence from the bloody turf wars, extortion and religious b...

Clydeside

By Robert Jeffrey

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Doon the Watter The Herald Book of the Clyde

By Robert Jeffrey, Ian Watson

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Glasgow s Hard Men

By Robert Jeffrey

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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.