Three Books of Known Space (Known Space Series)

Let three complete books in one take you on a dazzling journey into science fiction's most famous future history: Known Space!
WORLD OF PTAVVS
Kzanol was a thrint from a distant galaxy. He had been trapped on Earth in a time-stasis field for two billion years. Now he was on the loose, and telepath Larry Greenberg knew everything he was thinking. Thrints lived to plunder and enslave lesser planets . . . and the planet Kzanol had in mind was Earth!
A GIFT FROM EARTH
Shrouded in leth…