Mike Mearls Books

Magic Item Compendium

By Stephen Schubert, John Snead, Mike Mearls, Andy Collins, Owen K. C. Stephens, Frank Brunner, Eytan Bernstein

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Keep on the Shadowfell D D Accessory

By Mike Mearls, Bruce Cordell

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Pyramid of Shadows

By Mike Mearls, James Wyatt

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Dungeon s dragons player s handbook 3

By Mike Mearls

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Monster Manual 3

By Mike Mearls

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This core rulebook introduces an innovative monster stat block format, that makes running monsters easier for the Dungeon Master, and presents a horde of iconic monsters that fit into any campaign.

The esteemed loremaster Volothamp Geddarm is back! And never has his research been so dangerous-- he's compiled a dissertation on iconic monsters! Elminster doesn't believe Volo got some the detail...

Blood Bayou Scarred Lands D20

By Mike Mearls

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Sword and Sorcery Natures Fury Sword Sorcery

By Mike Mearls, James Bell

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The Siege of Durgam s Folly Sword Sorcery

By Mike Mearls

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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.