共 14 条
[1]
AZZI G, 1922, INT REV SCI PRACTICE, V13, P1184
[4]
DENNIS RE, 1967, A32 AR COOP EXT SER
[5]
FLORELL V. H., 1934, JOUR AMER SOC AGRON, V26, P954
[7]
KEZER A, 1931, 1391 COL AGR EXP STA, P13
[9]
Le Clerg E., 1962, FIELD PLOT TECHNIQUE
[10]
MOLIBOGA AI, 1928, EXP STA REC, V58, P734