DP - MPI Library TY - JOUR AU - Wulf, Oliver R. T1 - A Progression Relation in the Molecular Spectrum of Oxygen Occurring in the Liquid and in the Gas at High Pressure UR - https://www.jstor.org/stable/85266 T2 - Proceedings of the National Academy of Sciences of the United States of America SP - Vol. 14, No. 8 (1928), p. 609-613 CY - Washington PY - 1928 ER -