TY - JOUR T1 - The Spectra of Potassium, Rubidium, and Caesium, and Their Mutual Relations JF - Proceedings of the Royal Society of London (1854-1905) VL - 70 SP - 303 EP - 312 PY - 1902/01/01/ UR - http://dx.doi.org/10.1098/rspl.1902.0031 M3 - doi:10.1098/rspl.1902.0031 AU - Ramage, H. ER -