United States. Department of Agriculture & Hayes, J. (1980). Cutting Energy Costs. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O..
Citace podle Chicago (17th ed.)United States. Department of Agriculture a Jack Hayes. Cutting Energy Costs. [Washington, D.C.]: U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.
Citace podle MLA (9th ed.)United States. Department of Agriculture a Jack Hayes. Cutting Energy Costs. U.S. Dept. of Agriculture : For sale by the Supt. of Docs., U.S. G.P.O., 1980.
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