Spectroscopic Astrophysics - 1900-40 Spectroscopic Astrophysics - 1900-40v. 101884DeVorkin, David H. 1989. "Spectroscopic Astrophysics - 1900-40." Publications of the Astronomical Society of the Pacific, 101 884.More...ID: 100632Type: articleKeywords: NASM; NASM-Space History