1. 1
    by Blair, Byron Emerson, 1920-
    Published 1974
    Subjects ...Atomic frequency standards....
    Book
  2. 2
    by Corliss, Charles H.
    Published 1967
    Subjects ...Atomic spectra Tables....
    Book
  3. 3
    by Moore, Charlotte Emma, 1898-
    Published 1949
    Subjects ...Atomic spectra Tables....
    Book