共 8 条
[1]
CHARLES ALLEN H., 1961, JOUR BRIT GRASSLAND SOC, V16, P69, DOI 10.1111/j.1365-2494.1961.tb00214.x
[2]
COOPER JP, 1960, 8 P INT GRASSL C, P41
[5]
LAZENBY A., 1957, Journal of Agricultural Science, V48, P294, DOI 10.1017/S0021859600031658