Effect of alfalfa on the fertility elements of the soil in comparison with grain crops

被引:15
作者
Swanson, CO
Latshaw, WL
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D O I
10.1097/00010694-191907000-00001
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
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页码:1 / 39
页数:39
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