共 19 条
[1]
Boyd F. T., 1938, Agronomy Journal, V30, P569
[2]
CRAWFORD R. F., 1961, AGRON JOUR, V53, P159
[3]
DOWELL CT, 1919, 122 OKL AGR EXP STA
[4]
FRANZKE CJ, 1948, AGRON J, V40, P396
[5]
FRANZKE CJ, 1939, 1 S DAK AGR EXP STA
[6]
GARNER GB, 1958, 708 MO AGR EXP STA B
[8]
GILBERT CS, 1946, 277 WY AGR EXP STA B