The contribution of engineering to the British economyHartley, Harold Sir · First published 1965Open the Tome
The Tercentenary Celebrations of the Royal Society of London 1960Harold Hartley · First published 1961Open the Tome
Science and industry--the pattern of the future?Hartley, Harold Sir · First published 1954Open the Tome
The place of Berzelius in the history of chemistryHartley, Harold Sir · First published 1950Open the Tome
