David Jefferis Books

Describes aircraft and air combats of World War II, examining how the aircraft developed from lightly armed biplanes to jet fighters equipped with radar and flying bombers carrying atomic weapons.

Epic flights

By David Jefferis

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The first flyers

By David Jefferis

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The history of man's desire to fly and descriptions of early flights and aircraft.

Pedal power

By Peter Lafferty

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Traces the use of bicycles from their origins to the present day, with competitive racing and all-terrain bikes.

Skiing and snow sports

By Jackie Gaff

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Describes how skiing and other winter sports are performed and discusses the equipment, competitions, events, and champions associated with such sports.

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.