共 18 条
[1]
FINNELL HH, 1929, OKLA PANHANDLE EXP S, V4
[2]
GEORGESON CC, 1896, KANS AGR EXP STA B, V59
[3]
GEORGESON CC, 1892, KANS AGR EXP STA B, V33
[4]
KIRK L. E., 1934, Scientific Agriculture, V14, P569
[5]
LAWSON W., 1947, Journal of the Ministry of Agriculture, V53, P426
[6]
MCLAUGHLIN DE, 1945, RHOD AGR J, V42, P222
[7]
ROENER RF, 1943, T KANS ACAD SCI, V46, P110
[8]
STANSEL RH, 1937, TEX AGR EXP STA B, V539
[9]
STATEN HW, 1946, M161 OKL AGR EXP STA
[10]
STATEN HW, 1945, M143 OKL AGR EXP STA