AD&D - DUNGEON MASTERS GUIDE (Revised Ed, 1979)

From the back cover:

Dungeon masters everywhere, rejoice! Too long have you had to suffer along with crucial charts and tables spread through many works. Too long have you had to use makeshift references trying to solve the problem. You now have a complete compilation of the most valuable material for your refereeing, the DUNGEON MASTERS GUIDE.

Herein you will find:

• Combat matrices
• Encounter tables
• Monster attacks alphabetically listed
• Treasure and magic tables and descriptions
• Gem values by type
• Random wilderness terrain generation
• Random dungeon generation
• Suggestions on gamemastering

...and a whole lot more. It is an absolute must for every dungeon master!