Great collection of action short stories by Murray Leinster from "The Golden Age of Science Fiction". Featured here: "The Other Now", "If You Was a Moklin", "Doctor", "Third Planet", and "Manners and Customs of the Thrid".
Murray Leinster (June 16, 1896 – June 8, 1975) was a nom de plume of William Fitzgerald Jenkins, an American writer of science fiction and alternate history literature. He wrote and published more than 1,500 short stories and articles, 14 movie scripts, and hundreds of radio scripts and television plays.