Dale H. Porter Books

The abolition of the slave trade in England, 1784-1807

By Dale H. Porter

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The emergence of the past

By Dale H. Porter

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The life and times of Sir Goldsworthy Gurney

By Dale H. Porter

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Dale H. Porter has combined recent research by local Cornish historians with his own investigations of nineteenth-century London politics and society to reconstruct Goldsworthy Gurney's remarkable...

The Thames embankment

By Dale H Porter

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Any large-scale construction project is a complex of contingencies, pitting the volatility of nature against human ingenuity, and setting the discord of human nature against itself. In The Thames E...

The Thames Embankment

By Dale H. Porter

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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.