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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Thunderspire Labyrinth

By Wizards RPG Team, Richard Baker

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Pyramid of Shadows

By Mike Mearls, James Wyatt

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Dungeons Dragons Player s Handbook 2

By Jeremy Crawford

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"Player's Handbook 2 is the most significant expansion to the 4th edition Dungeons & Dragons game. This companion to the 'Player's handbook' core rulebook introduces the primal power source, which...

Dungeons dragons dungeon master s guide 2

By James Wyatt

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Offers tips, advice, and strategies for creating worlds and adventures that players can enjoy while participating in the roleplaying game.

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.

Dungeons Dragons

By Robert J. Schwalb

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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.