共 13 条
[11]
TAYLER R. S., 1965, Outlook on Agriculture, V4, P234
[12]
WALKER T. W. et al., 1954, Journal of the British Grassland Society, V9, P249, DOI 10.1111/j.1365-2494.1954.tb01339.x
[13]
WILLIAMS TE, 1965, 1ST P GEN M EUR GRAS, P39