• publisher: Lancaster, Pa., Press of the New era printing company
  • creator: Edmunds, Charles Keyser, 1876- [from old catalog]
  • Keyword: Reflection (Optics) Selenium. [from old catalog]
  • years: 1904.
  • pages: 2 p.l., 56 p.
  • class: QC425
  • download: pdf file