共 7 条
[1]
GUTHRIE W D, 1972, Iowa State Journal of Science, V46, P339
[2]
GUTHRIE WD, 1982, MAYDICA, V27, P221
[3]
GUTHRIE WD, 1978, MAYDICA, V23, P45
[4]
GUTHRIE WD, 1960, OHIO AGR EXP STN B, V860
[5]
Guthrie WD, 1971, P ANN CORN SORGHUM R, V26, P165
[6]
RUSSELL WA, 1979, CROP SCI, V19, P565
[7]
STEEL R. G. D., 1960, PRINCIPLES PROCEDURE