Trovati 3 documenti.
Trovati 3 documenti.
Manual for testing agricultural and vegetable seeds / United States Departemnt of Agriculture
Washington, D.C. : U.S. Government Printing Office, 1952
Agriculture handbook / U.S. Department of Agriculture ; 30
Seeds / [a cura di] the United States Department of Agriculture
Washington, D.C. : The United States government printig office, 1961
Fa parte di: Yearbook of agriculture / United States Department of agriculture
Fa parte di: Yearbook of agriculture / United States Department of agriculture
St. Paul, Minn. : APS press, c1989