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Cilt sonuçları
Sweet Sudan grass
R. E. Karper · Advance Seed Company
Sayfa sayısı yok · 1947
Seed industry and trade / Catalogs / Sudan grass / Seeds / Pasture plants
Grain sorghum improvement
A. B. Conner, R. E. Karper · Texas Agricultural Experiment Stations
12 sayfa · 1918
Sorghum / Varieties
Sweet sudan grasses
J. Roy Quinby, R. E. Karper, Texas Agricultural Experiment Station · Texas Agricultural Experiment Station
Sayfa sayısı yok · 1943
Grasses / Varieties
Trees and shrubs in Northwest Texas
D. L. Jones, Frank Gaines, R. E. Karper, Texas Agricultural Experiment Station · Texas Agricultural Experiment Station
63 sayfa · 1932
Trees / Shrubs