Alan Calder Books

Time Will Tell

By Aubrey Forrest

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Behind Outcomes

By Pat Hutchings

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A concise introduction to the NIS Directive A pocket guide for digital service providers

By Alan Calder

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The Cyber Security Handbook Prepare for Respond to and Recover from Cyber Attacks

By Alan Calder

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This book is a comprehensive cyber security implementation manual which gives practical guidance on the individual activities identified in the IT Governance Cyber Resilience Framework (CRF) that c...

The green office

By Alan Calder

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PCI DSS

By Alan Calder

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Nine steps to success

By Alan Calder

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Completely up to date with ISO27001:2013, this is the new edition of the original no-nonsense guide to successful ISO27001 certification. Ideal for anyone tackling ISO27001 for the first time, Nine...

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.