Conserving American resources.

Lignende værker

• Resource conservation : economics and policies.
  af: Ciriacy-Wantrup, S. V. (Siegfried V.), 1906-1980
  Udgivet: (1952)
• American resources : their management and conservation /
  af: Whitaker, J. Russell (Joe Russell), 1900-
  Udgivet: (1951)
• Conservation of natural resources /
  af: Smith, Guy Harold, 1895-
  Udgivet: (1971)
• Origins of American conservation.
  af: Clepper, Henry Edward, 1901-
  Udgivet: (1966)
• Conservation and management of natural resources in the United States /
  af: Bennett, Charles F.
  Udgivet: (1983)