TY - JOUR T1 - The Number of $ \beta $-Particles Emitted in the Transformation of Radium JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 87 IS - 595 SP - 230 EP - 255 PY - 1912/09/19/ UR - http://dx.doi.org/10.1098/rspa.1912.0078 M3 - doi:10.1098/rspa.1912.0078 AU - Moseley, H. ER -