Yazar
Knute Espe
2 cilt bulundu.
Cilt sonuçları
Soil survey of Mitchell County, Iowa
W. E. Tharp, Knute Espe, United States. Bureau of Soils, Iowa Agricultural Experiment Station · G.P.O.
34 sayfa · 1918
Soils / Soil surveys
Soil survey of Scott County, Iowa
E. H. Stevens, E. H. Smies, Knute Espe, United States. Bureau of Soils, Iowa Agricultural Experiment Station · G.P.O.
43 sayfa · 1917
Soils / Soil surveys
