共 17 条
[11]
[12]
STARK O, 1980, J DEV STUD, V16, P369, DOI 10.1080/00220388008421764
[14]
Stark O., 1978, EC DEMOGRAPHIC INTER
[15]
TODARO MP, 1969, AM ECON REV, V59, P138
[16]
Townsend P., 1974, POVERTY INEQUALITY C

