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Books Books 1 - 10 of about 45 related to A Journal of the First Voyage of Vasco Da Gama, 1497-1499.    

The Laws of Migration

Ernest George Ravenstein - Emigration and immigration - 1976 - 138 pages
This British volume, first published in 1885, contains the author's attempts to systematize the empirical regularities he observed in migration data.
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