1
por Goss, Robert C
Publicado 1967
“...Iowa State University of Science and Technology (Ames, E.U.A.)...”Publicado 1967
2
Publicado 1967
“...Iowa State University of Science and Technology (Ames, E.U.A.)...”
3
Publicado 1964
“...Iowa State University of Science and Technology (Ames, E.U.A.)...”
4
Publicado 1975
“...Iowa State University of Science and Technology (Ames, E.U.A.)...”
5
Publicado 1967
“...Iowa State University of Science and Technology (Ames, E.U.A.) . Center for Agricultural...”
6
Publicado 1962
“...Iowa State University of Science and Technology (Ames, E.U.A.) . Center for Agricultural...”
7
por Heady, Earl Orel, 1915-
Publicado 1965
“...Iowa State University of Science and Technology (Ames, E.U.A). Center for Agricultural and Economic...”Publicado 1965