M. Ruth Clark and Greta GrayUniversity of Nebraska, College of Agriculture, Experiment Station1929
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University of Nebraska, College of Agriculture, Experiment Station1927
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J.O. RankinUniversity of Nebraska, College of Agriculture, Experiment Station1925
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by L. Van EsUniversity of Nebraska, College of Agriculture, Experiment Station1925
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by H.C. FilleyUniversity of Nebraska, College of Agriculture, Experiment Station1925
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J.O. RankinUniversity of Nebraska, College of Agriculture, Experiment Station1924
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by L. Van EsUniversity of Nebraska, College of Agriculture, Experiment Station1924
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University of Nebraska, College of Agriculture, Experiment Station1923
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J.O. RankinUniversity of Nebraska, College of Agriculture, Experiment Station1923
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J.O. RankinUniversity of Nebraska, College of Agriculture, Experiment Station1923
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H.C. FilleyUniversity of Nebraska, College of Agriculture, Experiment Station1923
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