Alien MEGAPACK(R): 25 Modern and Classic Science Fiction Stories

Aliens have been a major theme in science fiction literature from the very beginnings of the genre...though they seem to have morphed over the decades from humanoids (six-limbed and blue though they might be!) to the utterly incomprehensible to noncorporeal energy beings -- and everything in between! This collection focuses on aliens as depicted in many different forms over many different decades...