John W. Derry Books

"For many people the late eighteenth century was a period of political corruption, with the political world waiting for the triumph of reform. In this study, now in a revised edition, John Derry sh...

Politics in the age of Fox, Pitt, and Liverpool

By John W. Derry

Average: 0.00, 0 Ratings

A Short History of 19th Century England

By John W. Derry

Average: 0.00, 0 Ratings

Regency Crisis

By Derry

Average: 0.00, 0 Ratings

Charles, Earl Grey

By John W. Derry

Average: 0.00, 0 Ratings

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.