The laws of migration /
Ravenstein, Ernest George, 1834-1913.
The laws of migration / E. G. Ravenstein. - Reprint ed. - New York : Arno Press, 1976. - v. : ill. ; 22 cm.
Reprint of the title originally published in 2 parts in v. 48, pt. 2, June, 1885 and v. 52, pt. 2, June, 1889 of the Journal of the Royal Statistical Society
0405079958
Migration, Internal.
Emigration and immigration.
The laws of migration / E. G. Ravenstein. - Reprint ed. - New York : Arno Press, 1976. - v. : ill. ; 22 cm.
Reprint of the title originally published in 2 parts in v. 48, pt. 2, June, 1885 and v. 52, pt. 2, June, 1889 of the Journal of the Royal Statistical Society
0405079958
Migration, Internal.
Emigration and immigration.