共 30 条
[21]
PRASAD R., 1968, Indian Journal of Agronomy, V13, P305
[24]
SCHELL DM, 1973, ARCTIC, V26, P130
[25]
SOUTO S M, 1968, Pesquisa Agropecuaria Brasileira, V3, P215
[27]
Stewart W., 1971, FRESHWATER BIOL, V1, P389, DOI [10.1111/j.1365-2427.1971.tb01570.x, 10.1111/ j.1365-2427.1971.tb01570.x, DOI 10.1111/J.1365-2427.1971.TB01570.X]
[28]
ON THE RELATION BETWEEN NITROGEN FIXATION AND LEGHAEMOGLOBIN CONTENT OF LEGUMINOUS ROOT NODULES
[J].
ACTA CHEMICA SCANDINAVICA,
1947, 1 (01)
:90-&
[29]
INFLUENCE OF SUBTERRANEAN CLOVER PASTURES ON SOIL FERTILITY .3. EFFECT OF APPLIED PHOSPHORUS AND SULPHUR
[J].
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH,
1969, 20 (03)
:447-+
[30]
[No title captured]