共 25 条
[3]
ALLAWAY WH, 1966, FEEDSTUFFS, V38, P62
[4]
AUSTIN ME, 1965, 296 US DEPT AGR AGR
[5]
BEESON KC, 1961, 200 US DEP AGR HDB, P34
[6]
DAVIDSON DF, 1960, 1112A US GEOL SURV B
[7]
DAVIDSON DF, 1959, 1084C US GEOL SURV B
[8]
GARDINER WR, 1963, AUSTRALIAN J EXPTL A, V3, P284
[9]
HAMILTON JOHN W., 1963, JOUR RANGE MANAGEMENT, V16, P261, DOI 10.2307/3895338
[10]
Hawley J.E., 1959, ECON GEOL, V54, P608, DOI 10.2113/gsecongeo.54.4.608