TY - JOUR T1 - The Effect of Pressure upon Arc Spectra. No. I. Iron JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 79 IS - 534 SP - 597 EP - 599 PY - 1907/09/27/ UR - http://dx.doi.org/10.1098/rspa.1907.0066 M3 - doi:10.1098/rspa.1907.0066 AU - Duffield, W. ER -