Sam Witt Books

Castle Sites
Castle Sites

By Kevin Melka, Sam Witt

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Dark Inheritance
Dark Inheritance

By Aaron Rosenberg, Sam Witt, Wil Upchurch

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Fear the Future. Terror and wonder grip the world when long forgotten gates to another world are flung open. Hidden from the masses, the Human Genome Project uncovers the secrets of our race. The d...

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The Astromundi Cluster
The Astromundi Cluster

By Sam Witt

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The Astromundi Cluster described a unique crystal sphere composed of free-floating asteroids. The sphere's weak barriers encourage free passage between the Prime Material Plane and the Inner Planes...

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Everlasting quail
Everlasting quail

By Sam Witt

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Everlasting quail
Everlasting quail

By Sam Witt

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Airships BAS1009
Airships BAS1009

By Sam Witt

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Doom Striders d20 system BAS1019
The Quintessential Drow Dungeons Dragons d20 3.0 Fantasy Roleplaying
Sheloth: City Of The Drow
Sheloth: City Of The Drow

By Sam Witt, Chris Quilliams

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Drow have long been one of the most popular, and feared, races of d20 fantasy settings. Mysterious and reviled, their habitats are often a focus for both terror and interest. This hardback details...

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Encyclopaedia Arcane
Encyclopaedia Arcane

By Anne Stokes, Sam Witt

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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.

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