This is a great collection of action short stories by Randall Garrett & Robert Silverberg from "The Golden Age of Science Fiction". Featured here: "The Alien Dies at Dawn", "The Incomplete Theft", "Menace From Vega", and "Bleekman's Planet".
Gordon Randall Phillip David Garrett (December 16, 1927 – December 31, 1987) was an American science fiction and fantasy author. He was a contributor to Astounding and other science fiction magazines of the 1950s and 1960s. He instructed Robert Silverberg in the techniques of selling large quantities of action-adventure science fiction, and collaborated with him on two novels about men from Earth disrupting a peaceful agrarian civilization on an alien planet.