THE INFECTED ROOT-HAIR COUNT FOR ESTIMATING THE ACTIVITY OF PLASMODIIOPHORA-BRASSICAE WORON IN THE SOIL

被引:46
作者
SAMUEL, G
GARRETT, SD
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D O I
10.1111/j.1744-7348.1945.tb06767.x
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S [农业科学];
学科分类号
09 ;
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页码:96 / &
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[11]   Fixed-point theorems for periodic transformations [J].
Smith, PA .
AMERICAN JOURNAL OF MATHEMATICS, 1941, 63 :1-8