共 11 条
[1]
BEAM W, 1911, 4 REP WELL TROP RES, VB, P23
[3]
CROWTHER F, 1948, AGRICULTURE SUDAN, P456
[4]
CROWTHER F, 1942, J AGRIC SCI CAMB, V32, P90
[5]
FERGUSON H., 1960, JOUR AGRIC SCI, V55, P143, DOI 10.1017/S0021859600022498
[6]
GAITSKELL A, 1959, GEZIRA
[7]
GREENE H, 1948, AGRICULTURE SUDAN, P457
[8]
JACKSON JE, 1963, ANN APPL BIOL, V51, P519
[9]
ROY D. K. D., 1961, Journal of Agricultural Science, V57, P387, DOI 10.1017/S0021859600049376
[10]
TOTHILL JD, 1948, AGRICULTURE SUDAN ED, P457