@book{
  author = "Sawyer, Ralph Alanson, 1895-",
  title = "Experimental spectroscopy",
  year: 1963
  key = "Spectrum analysis",
  key = "Spectroscope",
  publisher = "Dover Publications",
  address = "New York",
  edition = "3rd ed.",
  ISSN/ISBN = "9780486610450 [0486610454]",
}