John Duggan Books

Airships in International Affairs 1890 1940

Average: 0.00, 0 Ratings

"This book emphasizes the role of the airship as a unique attention-getting device to further the political ambitions of leaders and nations. Unlike the first spidery airplanes, monstrous airships...

Irish Free State Diplomatic Service 1922 37

By John Duggan

Average: 0.00, 0 Ratings

Herr Hempel at the German legation in Dublin, 1937-1945

By John P. Duggan

Average: 0.00, 0 Ratings

Clouth

By John Duggan, Gisela Woodward

Average: 0.00, 0 Ratings

LZ 129 Hindenburg Lighter Than Air History

By John Duggan

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.