Scientific progress /
Halley Stewart Trust.
Jeans, James Hopwood,Sir,1877-1946.
Bragg, William,Sir.
Appleton, E. V.
Mellanby, Edward,Sir,1884-1955.
Huxley, Julian,1887-1975.
Haldane, J. B. S.(John Burdon Sanderson),1892-1964.
London,
1936.