Sean Williams Books

Twinmaker

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When her best friend Libby misuses instant transportation technology to alter her appearance, seventeeen-year-old Clair is drawn into a shadowy world of conspiracies and cover-ups as she attempts t...

Crashland

By Sean Williams

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"In this sequel to Twinmaker, the world's teleportation network has crashed, armies of dupes are attacking--and Clair must determine her allegiances, figure out how to find her mysterious online fr...

Hollowgirl

By Sean Williams

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In the final book in the Twinmaker series, Clair, Q, and Kari Sargent must enter The Yard, a digital landscape created by their enemy, in order to save the world.

Force Heretic I: Remnant

By Shane Dix, Sean Williams

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Force Heretic II: Refugee

By Shane Dix, Sean Williams

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Force Heretic III: Reunion

By Shane Dix, Sean Williams

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The Sound of the Ancestral Ship: Highland Music of West Java

By Sean Williams

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The Sound of the Ancestral Ship: Highland Music of West Java

By Sean Williams

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Remnant: Star Wars Legends

By Shane Dix, Sean Williams

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As the bloodied and weary galaxy faces battle once more, the Jedi take on the formidable task of bringing the last of the Empire into the light. . . .From the ashes of the New Republic—torn to shre...

Refugee: Star Wars Legends

By Shane Dix, Sean Williams

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Swift and deadly, the Yuuzhan Vong have blasted their way across the galaxy—and now stand on the threshold of total victory. Yet a courageous few still dare to oppose them. . . . Rife with hostile...

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.