• publisher: Washington, D.C. : U.S. Dept. of Agriculture
  • creator: Schorger, A. W. (Arlie William), 1884-1972 Pettigrew, Robert Leslie, 1893-
  • contributor: Pettigrew, Robert Leslie, 1893-
  • Keyword: Turpentine. Gums and resins.
  • years: 1917.
  • pages: 7 p., 2 p. of plates ;
  • notes: Caption title.
  • download: pdf file