STEPHEN D. SULLIVAN Books

Sol's children

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A collection of science fiction short stories that take place on and around the various planets of our own solar system.

The Phoenix Legend of the Five Rings 4

By Stephen D. Sullivan

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Tournament Of Death: The Empyrean Keep

By Sullivan, Stephen D., STEPHEN D. SULLIVAN, Sullivan, Stephen D.

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Spider Riders: Book One

By Stephen D. Sullivan, Patsy Cameron Anasti, Tedd Anasti

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When Hunter Steele tries to save a friend on a hunting trip, he embarks on a frightening journey to the Inner World where he meets a young princess and then learns to ride a giant spider in order t...

Spider riders

By Tedd Anasti

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Spider riders

By Stephen D. Sullivan, Patsy Cameron Anasti, Tedd Anasti

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Hunter Steele continues his adventures in Arachnia, an underground world with fierce warriors that ride huge, telepathic spiders.

Timewankers Eros Graphic Album Series No. 13

By Stephen Sullivan

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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.