共 15 条
[1]
COWLISHAW SJ, 1951, BRIT GRASSLAND SOC J, V6, P179
[4]
HEADY H. F., 1957, Journal of Range Management, V10, P175, DOI 10.2307/3893815
[9]
SLOBODKIN L. B., 1962, ADVANCES ECOL RES, V1, P69, DOI 10.1016/S0065-2504(08)60301-3