Christopher Hopper Books

On the floating cities above the cloud-floor, the only rule is don't fall. Enter the avionic steampunk world of master storyteller Christopher Hopper as he takes readers on a fast-paced, death-defy...

Venom and Song

By Wayne Thomas Batson, Adam Verner, Christopher Hopper

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Keto Acids in Carbon Monoxide Therapeutics

By Christopher Hopper

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The Lion Vrie

By Christopher Hopper

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The Ricci flow in Riemannian geometry

By Ben Andrews

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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.