共 13 条
[6]
Chistaller W., 1966, CENTRAL PLACES SO GE
[8]
MULLIGAN GF, 1981, PAPERS REGIONAL SCI, V48, P77
[9]
MULLIGAN GF, 1982, 821 U AR DEP GEOGR R
[10]
MULLIGAN GF, 1982, INT REG SCI REV, P83