Douglas Hill Books

Going Green

By Douglas Hill, Elkington John., Julia Hailes, Joel Makower

Average: 0.00, 0 Ratings

A guide to saving the environment, including explanations of ecological issues and projects.

Witches & Magic-Makers

By Douglas Hill

Average: 0.00, 0 Ratings

Presents the practices, rituals, and roles of witches and magic-makers around the world and throughout history.

Galactic Warlord

By Douglas Arthur Hill, Douglas Hill

Average: 0.00, 0 Ratings

To avenge the destruction of his home planet and its people, Keill seeks the identity of an evil genius he and others believe is responsible.

Deathwing over Veynaa

By Douglas Arthur Hill, Douglas Hill

Average: 0.00, 0 Ratings

As Keill battles to save the planet Veynaa from destruction at the hands of an evil genius of the Deathwing, he discovers, almost too late, that there is more than one agent of the Deathwing on Vey...

Planet of the Warlord

By Douglas Arthur Hill, Douglas Hill

Average: 0.00, 0 Ratings

As the last legionary of the destroyed planet Moros, Keill Randor and his alien helpmate, Glyr, place themselves in mortal danger when they confront the evil intelligence responsible for the destru...

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.