Leo Hartas Books

This old house
This old house

By Leo Hartas

Average: 0.00, 0 Ratings

Read More
Haunted Castle
Haunted Castle

By Leo Hartas

Average: 0.00, 0 Ratings

Read More
Gran Turismo 4
Gran Turismo 4

By Prima Games

Average: 0.00, 0 Ratings

Read More
Mimi and the Picnic
How to draw and sell digital cartoons
The apartment book
The apartment book

By Leo Hartas

Average: 0.00, 0 Ratings

Illustrates a day in the life of an apartment building by showing activities going on in different units at various times between 7:00 a.m. and 1:00 a.m.

Read More
Space explorer atlas
Space explorer atlas

By Richard Platt

Average: 0.00, 0 Ratings

Rocket enthusiast Norbert and amateur astronomer Izzy learn about the sun, planets, and moons on a tour of the solar system.

Read More
What s Going on Around the World
Mirabilis
Mirabilis

By Leo Hartas Dave Morris

Average: 0.00, 0 Ratings

Read More
Game Guru
Game Guru

By Dave Morris, Leo Hartas

Average: 0.00, 0 Ratings

Read More

Related Articles from our Blog

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.

Read More