共 13 条
[1]
Ahmadjian, 1973, LICHENS, P311
[2]
ALEXANDER V, 1976, REP KEVO SUBARCTIC, V13, P12
[6]
NITROGEN-FIXATION BY STEREOCAULON-PASCHALE UNDER FIELD CONDITIONS
[J].
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE,
1977, 55 (05)
:585-592
[7]
Kallio P., 1972, REP KEVO SUBARCTIC R, V9, P7
[9]
LIE TA., 1971, PLANT SOIL SPECIAL, V117-127