Clay, Jacob, n. 1882 |
Ionization and conductivity in gases at high pressures / by J. Clay |
[S.l. : s.n., 1937?] |
Clay, Jacob, n. 1882 |
Magnetic storm and variation of cosmic rays / by J. Clay and E.M. Bruins. |
[S.l. : s.n., 1938?] |
Clay, Jacob, n. 1882 |
Schets eener kritische Geschiedenis van het begrip naturwet in de nieuwere wijsbegeerte / J. Clay |
Leiden : Brill, 1915. |