The laws of migration - Ravenstein, Ernest George, 1834-1913. (New York : Arno Press, 1976)
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
Keywords: Migration, Internal; Emigration and immigration