共 24 条
[21]
STEEL R. G. D., 1960, PRINCIPLES PROCEDURE
[22]
TARRANT RF, 1971, PLANT SOIL SPECIAL, V335
[23]
NITROGEN-FIXATION BY ACTINOMYCETE-NODULATED ANGIOSPERMS
[J].
BIOSCIENCE,
1978, 28 (09)
:586-592
[24]
1985, SAS USERS GUIDE