• publisher: Urbana-Champaign : [Dept. of Geography, University of Illinois at Urbana-Champaign]
  • creator: Soot, Siim
  • Keyword: Geography Mathematics. G鈋ographie Math鈋matiques.
  • years: 1975.
  • pages: 43 leaves :
  • class: G70.3
  • notes: Cover title.
  • download: pdf file