共 18 条
[2]
BYRNE E, 1968, METHODS ANALYSIS
[3]
Hardy R. W. F., 1976, Symbiotic nitrogen fixation in plants., P421
[5]
HAVELKA UD, 1976, 1ST P INT S NITR FIX, V2, P456
[8]
Masterson C. L., 1976, International Biological Programme, P299
[10]
MULDER E. G., 1960, Plant and Soil, V13, P265, DOI 10.1007/BF01677507