In 1973, this story was voted by the Science Fiction Writers of America as one of the finest science fiction novellas ever written

http://www.whogoesthere.info/book/whogoesthere.pdf

Who Goes There? is a science fiction novella by John W. Campbell, Jr. originally under the pen name Don A. Stuart, published August 1938 in Astounding Stories. In 1973, the story was voted by the Science Fiction Writers of America as one of the finest science fiction novellas ever written, and published with the other top vote-getters in The Science Fiction Hall of Fame, Volume Two.