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.
Alice Muriel Williamson Alice Muriel Williamson, née Livingston (1869 – 24 September 1933) was an American-British novelist, who styled herself Mrs. C. N. Williamson after her marriage.