TY  - JOUR
A1  - Massey, D.S.
A1  - España, F.G.
T1  - The social process of international migration
Y1  - 1987
DO  - 10.1126/science.237.4816.733
UR  - https://doi.org/doi:10.1126/science.237.4816.733
VL  - 237
IS  - 4816

ER  -