Παρόμοια τεκμήρια

• The United States and world resources /
  ανά: Patton, Donald J
  Έκδοση: (1968)
• Water resources activities in the United States : water supply and demand /
  Έκδοση: (1960)
• A directory of information resources in the United States : Water /
  Έκδοση: (1966)
• Mineral resources of the United States, 1918 /
  ανά: Loughlin, G. F. 1880-1946.
  Έκδοση: (1921)
• The economic choice between hydroelectric and thermal power developments : with a note on joint costs in multipurpose projects /
  ανά: Tak, Herman G. van der
  Έκδοση: (1966)