The theory of atomic spectra / by E.U. Condon and G.H. Shortley. Atomic spectra. Condon, Edward Uhler, 1902-1974. Shortley, George, 1910- joint author. Spectrum analysis. Quantum theory. QC454 .C64 539.14 COT Includes index. Cambridge : Cambridge University Press, 1967. 1967. 1935 Text xiv, 441 p.: eng