Gygaxian Fantasy Worlds Volume II
From the back cover:
Requires the use of the Dungeons and Dragons Player's Handbook, Third Edition, published by Wizards of the Coast, Inc.
In this tome, the grandmaster of roleplaying presents an arsenal of definitions, lists, tables, and charts invaluable to game designers and setting creators. The World Builder details trees and herbs, terrain features, and everyday facts, from government structure to the tensile strength of rope, and includes an illustrated guide to armor and weapons. All of these setting details are supplemented by rules for use with the d20 system and Lejendary Adventure system, including useful notes on magical gems and spell components.
From the mundane to the extraordinary, the depth of information within this second volume of Gary Gygax's Fantasy World series stands legion.
This book is mostly generic information that would help a GM design a world for any fantasy game.