共 5 条
[2]
FELKER P, 1980, P INT C STUDY SEMI A
[3]
PARKER KW, 1952, 968 US DEP AGR CIRC
[4]
WHISENANT SG, 1978, J RANGE MANAGE, V31, P316
[5]
Whittaker R. H., 1975, PRIMARY PRODUCTIVITY, P55, DOI 10.1007/978-3-642-80913-24