Barbara Hambly Books

One of the most influential practitioners of American horror, H.P. Lovecraft inspired the work of Stephen King, Anne Rice, and Clive Barker. As he perfected his mastery of the macabre, his works de...

Icefalcon's Quest

By Barbara Hambly

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Mother of Winter

By Barbara Hambly

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Five years after defeating the Dark Ones, the embattled inhabitants of the once-great Keep of Dare face a yet more deadly foe. An icy-cold force was spreading across the northlands, spawning strang...

Icefalcon's Quest

By Barbara Hambly

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Traveling with the dead

By Barbara Hambly

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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.