Christopher John Books

Fireball

Average: 0.00, 0 Ratings

Two boys are drawn by a fireball into a society, parallel to 20th-century England, which has many of the characteristics of Roman Britain.

When The Tripods Came

By Sam Youd, John Christopher

Average: 0.00, 0 Ratings

Fourteen-year-old Laurie and his family attempt to flee England when the Tripods descend from outer space and begin brainwashing everyone with their hypnotic Caps.

The lead miners of the northern Pennines, in the eighteenth and nineteenth centuries

By Christopher John Hunt

Average: 0.00, 0 Ratings

The pool of fire

By Sam Youd

Average: 0.00, 0 Ratings

Will and a small group of free people plan to destroy the three great cities of the Tripods before the arrival of a space ship destined to doom humanity.

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.