Παρόμοια τεκμήρια

• A directory of information resources in the United States : Water /
  Έκδοση: (1966)
• Specialized science information services in the United States : a directory of selected specialized information services in the physical and biological sciences /
  Έκδοση: (1961)
• The United States and world resources /
  ανά: Patton, Donald J
  Έκδοση: (1968)
• Mineral resources of the United States, 1918 /
  ανά: Loughlin, G. F. 1880-1946.
  Έκδοση: (1921)
• Water resources activities in the United States : water supply and demand /
  Έκδοση: (1960)