Wavelength tables : with intensities in arc, spark or discharge tube of more than 100,000 spectrum lines : most strongly emitted by the atomic elements under normal conditions of excitation, between 10,000 A. and 2,000 A. arranged in order of decreasing wavelengths / measured and compiled under the direction of G.R.Harrison by staff members of the Spectroscopy Laboratory of the Massachusetts Institute of Technology ; assisted by the Works Progress Administration, U.S.A.