共 29 条
[11]
FOX R. L., 1955, AGRON JOUR, V47, P361
[12]
FOY C. D., 1965, SOIL SCI AMER PROC, V29, P64
[17]
NORRIS D. O., 1965, Plant and Soil, V22, P143, DOI 10.1007/BF01373988
[18]
NORRIS D. O., 1958, Nutrition of the Legumes. Proc. Univ. Nottingham fifth Easter Sch. Agric. Sci., P164
[20]
Northcote KH, 1971, FACTUAL KEY RECOGNIT, V3rd