"Astronomical spectroscopy." . . . . "Spectrum analysis in its application to terrestrial substances and the physical constitution of the heavenly bodies familiarly explained"@en . . . "Spectrum analysis in its aqplication to terrestrial substances and the physical constitution of the heavenly bodies : familiarly explained"@en . . . . . "Spectrum analysis in its aqplication to terrestrial substances : and the physical constitution of the heavenly bodies : familiarly explained"@en . . . . . . . "Spectrum analysis." . . . .