共 30 条
- [3] BRADLEY W, 1928, SOCIETY, P1310
- [4] BRADLEY W, 1928, SOCIETY, P2904
- [5] BRADLEY W, ANM, V4, P1165
- [6] BRADLEY W, 1928, SOCIETY, P1541
- [7] BRADLEY W, 1930, SOCIETY, P793
- [8] DE FREMERY P., 1937, Nature, V139, P26, DOI 10.1038/139026a0
- [9] GAARENSTROOM JH, 1936, NED VEREENIG PHYSL P, P20
- [10] GAARENSTROOM JH, 1937, ACTA BREVIA NEERL