Jonathan Blum Books

Short Trips Doctor Who Series

By British Broadcasting Corporation, Stephen Cole

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The usual uncertainties

By Jonathan Blum

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Bernice Summerfield Collected Works

By John Fletcher, Mags L Halliday, Simon A Forward, James Swallow, Nick Walters, Dale Smith, Kate Orman, Mark Michalowski, David N. Smith, Nick Wallace, Nick Wallace (Editor), Philip Purser-Hallard, Eddie Robson, Simon Bucher-Jones, Lance Parkin, Jonathan Blum, Ian Mond, Sin Deniz, Steven Kitson

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This book is a short story anthology set in Big Finish Productions' Professor Bernice Summerfield series. Bernice Summerfield appears in many original New Adventures of Doctor Who novels, as well...

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.