TY - BOOK AU - Moore, C. E. TI - Atomic energy levels as derived from the analysis of optical spectra: vol. I, the spectra of hydrogen, deuterium, tritium, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, argon, potassium, calcium, scandium, titanium and vanadium T2 - Circular of the national bureau of standards; 467 PY - 1949/// CY - Washington PB - U. S. Government Printing Office KW - Atomic energy levels KW - Optical spectra KW - Spectra of atoms ER -