A. Udall

Transport Improvements and Rural Outmigration in Colombia

A. Udall, 1981, Economic Development and Cultural Change.

The ‘luxury unemployment’ hypothesis: A review of recent evidence

Stuart W. Sinclair, A. Udall, 1982 .

Measuring regional inmigration, outmigration, and natural increase over time☆

A. Udall, 1979 .

Urbanization and rural labor supply: A historical study of Bogotá, Colombia since 1920

A. Udall, 1980, Studies in comparative international development.