U.S. Dept. of Agriculture

4 edições catalogadas · Washington, D.C · 1937–1950

[1950]DAVIS, Arnold M.. Erosion on roads and adjacent lands. Washington, D.C: U.S. Dept. of Agriculture, 1950.

[1941]STIEBELING, Hazel K.. Somos bem alimentados?. Washington, D.C: U.S. Dept. of Agriculture, 1941.

[1939]BURROWS, William H.. Insemina𣥡o artificial em galinhas e perus. Washington, D.C: U.S. Dept. of Agriculture, 1939.

[1937]SMITH, W. D.. Quando se deve segar o arroz. Washington, D.C: U.S. Dept. of Agriculture, 1937.

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