T Hymowits. (1976). Soybean cultivars released in the United States and Canada: Morphological descriptions and responses to selected foliar, stem, and root diseases. Urbana: University of Illinois.
Dyfyniad Arddull ChicagoT Hymowits. Soybean Cultivars Released in the United States and Canada: Morphological Descriptions and Responses to Selected Foliar, Stem, and Root Diseases. Urbana: University of Illinois, 1976.
Dyfyniad MLAT Hymowits. Soybean Cultivars Released in the United States and Canada: Morphological Descriptions and Responses to Selected Foliar, Stem, and Root Diseases. Urbana: University of Illinois, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.