共 15 条
[4]
LINDSAY W. L., 1959, SOIL SCI SOC AMER PROC, V23, P12
[5]
LUEBS R E, 1973, Journal of Environmental Quality, V2, P137
[7]
Vanderholm D. H., 1975, MANAGING LIVESTOCK W, P282
[9]
[No title captured]
[10]
[No title captured]