共 8 条
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- [3] KANTACK EDMON J., 1954, FIELD AND LAB, V22, P65
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- [6] SILL WEBSTER H., 1955, PLANT DIS REPORTER, V39, P29
- [7] SLYKHUIS J. T., 1953, CANADIAN JOUR AGRIC SCI, V33, P195
- [8] STAPLES R, 1956, NEBRASKA AGR EXPT ST, V178