Courtesy of Cap. Phil and the Destines website ... http://www.captphilonline.com/EssentialDestinies_Authors.html
Hal Clement was the pseudonym used by American science fiction writer Harry Clement Stubbs.
Improve this author
Hal Clement is currently considered a "single author." If one or more works are by a distinct, homonymous authors, go ahead and split the author.
Hal Clement is composed of 13 names. You can examine and separate out names.