共 9 条
[1]
Darrow GM, 1927, J AGRIC RES, V34, P0393
[3]
GARDNER VR, 1923, MISSOURI AGR EXP STA, V57
[4]
LAMBERTYE L, 1863, FRAISIER
[5]
Longley AE, 1926, J AGRIC RES, V32, P0559
[6]
MACOUN WT, 1921, INTERIM REPORT DOMIN
[7]
SCHUSTER CE, 1926, OREGON AGR EXP STA C, V67
[8]
SCHUSTER CE, 1921, OREGON AGR EXP STA C, V3, P44
[9]
Valleau WD, 1918, J AGRIC RES, V12, P0613