APOCalypse 2500 GM's Campaign Guide & Bestiary

From publisher blurb:

This GM's Campaign Guide & Bestiary contains essential tools for the game master, from reference tables to monsters. The game master's tools provide game mechanics quick reference, optional rules applications, and random generation of game elements such as weather, moon phase, and storm affects for adventures on paper or on the fly. The various NPC's, locations, and monsters are fully specked out in easy to read table format for instant game use. Many new possibilities for player characters, both species and vocation, are added and fully annotated in the bestiary section for easy use in character creation.