JF Ptak Science Books

1900 PHYSIKALISCHE
ZEITSCHRIFT 1: 347-348
Rutherford, E
Concerning radioactive thorium compounds
1900 PHYSIKALISCHE ZEITSCHRIFT 2: 53-55
Rutherford E; Kling RKM
The energy of the becquerel-and x-rays and the necessary energy for the
production of ions in gases.