共 7 条
[2]
HYDER D. N., 1966, J RANGE MANAGE, V19, P11, DOI 10.2307/3895517
[3]
HYDER D. N., 1965, J RANGE MANAGE, V18, P90, DOI 10.2307/3895474
[4]
KLIPPLE GE, 1960, 1216 US DEP AGR TECH
[5]
STODDART LA, 1943, RANGE MANAGEMENT, P257