Tony Porter Books

Technology Governance and Political Conflict in International Industries

By Tony Porter, Porter Tony

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Private authority and international affairs

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Private authority and international affairs

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The great white palace

By Porter Tony

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Agatha Christie and all that jazz - the magical story of Burgh Island and its hotel In 1986 Tony Porter and his wife had successful careers as fashion consultants in London's West End where he ran...

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.