Bill Norman Books

Luftwaffe Losses over Northumberland and Durham

By Bill Norman, Norman Bill.

Average: 0.00, 0 Ratings

Halifax Squadron the wartime bombing operations of No.640 Squadron Leconfield

By Bill Norman

Average: 0.00, 0 Ratings

Formed in January 1944, when the Battle of Berlin was at its height, No. 640 Squadron lost 50 aircraft on operations during its brief existence and 329 of its aircrew became casualties of war. Thi...

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.