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.
Robert Briffault Robert Stephen Briffault {'1': ", '2': ", '3': ", '4': "} (] , 1874 – 11 December 1948) was a French surgeon who found fame as a social anthropologist and later in life as a novelist.