• publisher: New York, D. Van Nostrand
  • creator: Pettit, James Sumner, 1906-
  • Keyword: Photomechanical processes.
  • years: 1884.
  • pages: 7-127 p.
  • class: TR925
  • notes: "Prepared for the use of the Department of drawing of the U.S. military academy."
  • download: pdf file