1
2
3
Publicado 1903
“...E.U.A Office of Experiment Stations...”
4
Publicado 1903
“...E.U.A Office of Experiment Stations...”
5
Publicado 1913
“...E.U.A Office of Experiment Stations...”
6
Publicado 1926
“...E.U.A Office of Experiment Stations...”
7
Publicado 1931
“...E.U.A Office of Experiment Stations...”
8
Publicado 1932
“...E.U.A Office of Experiment Stations...”
9
Publicado 1937
“...E.U.A Office of Experiment Stations...”
10
Publicado 1903
“...E.U.A Office of Experiment Stations...”
11
12
13