David S. Goyer Books

Heaven's Shadow

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The science fiction epic of our time has arrived. Three years ago, an object one hundred miles across was spotted on a trajectory for Earth's sun. Now, its journey is almost over. As it approaches...

Heaven's War

By David S. Goyer, Michael Cassutt

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The competing teams of astronauts sent to explore the asteroid Keanu discovered it was, in fact, a giant spacecraft with an alien crew carrying a plea for help. A brave new frontier...

Heaven's Shadow

By David S. Goyer, Michael Cassutt

Average: 0.00, 0 Ratings

The science fiction epic of our time has arrived.Three years ago, an object one hundred miles across was spotted on a trajectory for Earth's sun. Now, its journey is almost over. As it approaches,...

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.