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A Note On The Expression Of Time -- Introduction: Modelling Patterns Of Human Migration -- Earliest Human Migrations, To 40,000 Bp -- Peopling Northern And American Regions, 40,000 To 15,000 Bp -- Agriculture, 15,000 To 5000 Bp -- Commerce, 3000 Bce To 500 Ce -- Modes Of Movement, 500 To 1400 Ce -- Spanning The Oceans, 1400 To 1700 -- Labor For Industry And Empire, 1700 To 1900 -- Bright Lights Of Urbanization, 1900 To 2000 -- Appendix: Migration Theories And Debates. Patrick Manning With Tiffany Trimmer. Simultaneously Published In The Usa And Canada--t.p. Verso. Includes Bibliographical References And Index.