Wade-Dahl-Till valve was partially built by the novelist of what nationality?
Roald Dahl Roald Dahl ( , ] ; 13 September 1916 – 23 November 1990) was a British novelist, short story writer, poet, screenwriter, and fighter pilot. His books have sold more than 250 million copies worldwide.
Jack Vance John Holbrook "Jack" Vance (August 28, 1916 – May 26, 2013) was an American mystery, fantasy, and science fiction writer. Though most of his work has been published under the name Jack Vance, he also wrote 9 mystery novels using his full name John Holbrook Vance, three under the pseudonym Ellery Queen, and one each using the pseudonyms Alan Wade, Peter Held, John van See, and Jay Kavanse. Some editions of his published works give his year of birth as 1920.