John C. Wright Books

"John C. Wright's new fantasy, which began with Orphans of Chaos and continues in Fugitives of Chaos, is a tale about five orphans raised in a strict British boarding school who begin to discover t...

Null A Continuum

By John C. Wright

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A. E. van Vogt was one of the giants of the golden age of classic sf, the 1940s. Of his masterpieces, The World of Null-A is perhaps most influential. It was the first major trade SF hardcover ev...

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.