Gently used and still VGC with some page marker flags. Advanced Dungeons & Dragons Special Reference Work Dungeon Masters Guide - Essential Reference Information for Gamemastering Advanced D&D by Gary Gygax - TSR Games. HC dated 1979 with 232 pages. A compiled volume of information primarily used by Advanced Dungeons & Dragons game referees, including: Combat Tables, Monster Lists and Encounters; Treasure and Magic Tables and Descriptions; Random Dungeon Generation; Random Wilderness Terrain Generation; Suggestions on Gamemastering; and More!