The Alien Years - Robert Silverberg Epub | Pdf https://bookmate.com/books/yNeKtKaM
When aliens invade, a generations-long struggle begins against an impenetrable enemy in this sci-fi epic from the Hugo and Nebula Award–winning author.The Entities have arrived on Earth, fifteen feet tall with impenetrable defenses and inscrutable motives. As conquerors, they have no demands, no explanations, simply harsh consequences should they be...