1. Migration, unemployment, and development: a two-sector analysis;Harris;Economic Development and Cultural Change,1970
2. The costs of urbanization in developing countries;Linn;Economic Development and Cultural Change,1982
3. The ruralization of African cities: learning to live with poverty;Stren,1986
4. The costs of urbanization: a four-country comparison;Richardson;Economic Development and Cultural Change,1987
5. Cities and Economic Development: From the Dawn of History to the Present;Bairoch,1988