The effects of high vacuum and ultraviolet radiation on nonmetallic materials Normal E. Wahl, Roy R. Lapp Frederick C. Haas Cornell Aeronautical Laboratory Inc.Cornell Aeronautical Laboratory.1961EN
Migration from Rural Areas: The Evidence from Village Studies.by John Connell; Biplab Dasgupta; Roy Laishley; Michael LiptonShanno · Contemporary Sociology A Journal of Reviews1978PDF248 KB
Migration from Rural Areas: The Evidence from Village Studiesby John Connell; Biplab Dasgupta; Roy Laishley; Michael LiptonV.T. · Population and Development Review1978PDF234 KB
MIGRATION FROM RURAL AREAS: THE EVIDENCE FROM VILLAGE STUDIES. By John Connell, Biplab Dasgupta, Roy Laishley and Michael LiptonSTONE · New Zealand Geographer1979PDF318 KB
APPLIED ANTHROPOLOGY: Village Society and Labour Use. Biplab Dasgupta, with Roy Laishley, Henry Lucas, and Brian Mitchell: Assessing Village Labour Situations in Developing Countries. John Connell and Michael LiptonVickers · American Anthropologist1980PDF94 KB
