William H. Stoddard Books

An Age of Discovery The 19th century's heroes were adventurers, pioneers, and scientists, from explorers in the African jungles to inventors in basement workshops. They transformed the world. Enter...

Gurps Supers

By William H. Stoddard

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Men Like Gods The 20th century gave birth to a new genre of fiction: the super-powered adventure. Men and women with strange powers gave a visible expression to the reader's sense of wonder, as the...

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.