AD&D Dungeon Masters Guide Hardcover 2nd Ed, 1st Printing TSR 2011 AD&D 1979

This printing is recognized by the lack of a barcode on the back cover.

Whether you're running a single adventure or masterminding a complete campaign, theDungeon Master's Guideis the absolute best source for information. There's no need to guess the rules. You'll learn spells, monsters, travel, magic lists, and combat rules.