共 17 条
[1]
BILLINGTON RA, 1949, WESTWARD EXPANSION H, P7
[2]
BOGUE DJ, 1953, POPULATION GROWTH ST
[3]
BRIGHT DL, 1941, AM SOCIOLOGICAL REV, V5
[4]
Burns A. F., 1934, PRODUCTION TRENDS US
[5]
EDWARDS AM, 1943, COMP OCCUPATION STAT, P102
[6]
GILLEN PB, 1951, DISTRIBUTION OCCUPAT
[7]
Goodrich C. B., 1936, MIGRATION EC OPPORTU
[8]
MADDEN CH, 1956, EC DEV CULTURAL APR
[9]
MCLAUGHLIN GE, 1938, GROWTH AM MANUFACTUR, P211
[10]
QUINN JA, 1950, HUMAN ECOLOGY, pCH17