being an address given at the centenary celebration of the Franklin institute in Philadelphia, September, 1924 Townsend, John Sir 1868-1957 creator text enk Oxford At the Clarendon press 1925 monographic eng

print

166 p. : ill., diagrs. ; 23 cm. by John S. E. Townsend. Electrons Electric discharges through gases QC711 .T6 539.7211 TOE 26006825 DLC 760726 20140929115533.0 6393597