TY - JOUR T1 - Spectroscopic Investigations in Connection with the Active Modification of Nitrogen. IV. A Band Spectrum of Boron Nitride JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 91 IS - 625 SP - 120 EP - 134 PY - 1915/01/01/ UR - http://dx.doi.org/10.1098/rspa.1915.0002 M3 - doi:10.1098/rspa.1915.0002 AU - Jevons, W. ER -