(1958). Land: The yearbook of agriculture, 1958. Washington, D.C: Government Printing Office.
Παραπομπή Chicago StyleLand: The Yearbook of Agriculture, 1958. Washington, D.C: Government Printing Office, 1958.
Παραπομπή MLALand: The Yearbook of Agriculture, 1958. Washington, D.C: Government Printing Office, 1958.
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