Charles Finch Books

In the small hours of the morning one fall day in 1866, a frantic widow visits detective Charles Lenox, Lady Annabelle's problem is simple: her beloved son, George, has vanished from his room at Ox...

A beautiful blue death

By Charles Finch

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On any given day in London, all Charles Lenox, Victorian gentleman and armchair explorer, wants to do is relax in his private study with a cup of tea, a roaring fire and a good book. But when his l...

The Fleet Street murders

By Charles Finch

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"Christmas 1866, and the amateur sleuth Charles Lenox, recently engaged to Lady Jane Grey, is happily celebrating the holiday. Across London, however, two journalists have just met with violent dea...

A Beautiful Blue Death

By Charles Finch

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The African background to medical science

By Charles Finch, Charles S. Finch

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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.