• publisher: Denver, Col., Eames brothers, state printers
  • creator: Gavin, Martin Joseph, 1894- Sharp, Leslie H., joint author United States. Bureau of Mines
  • contributor: Sharp, Leslie H., joint author. United States. Bureau of Mines.
  • Keyword: Oil-shales. Petroleum Colorado.
  • years: 1921.
  • pages: 68 p.
  • class: TN872.C6
  • notes: At head of title: State of Colorado. Cooperative Oil Shale Investigation (in cooperation with the United States Bureau of mines) Martin J. Gavin, engineer in charge.
  • download: pdf file