1. Perspectivas de producao agricola na Regiao Amazonica;Alvim;Interciencia,1978
2. Agricultural production potential of the Amazon Region;Alvim,1980
3. Migration to Northern Goias;Aragon,1978
4. Issues and evidence on recent Brazilian economic growth;Bacha;World Development,1977
5. Continuous crop production on acid soils in the Peruvian Amazon;Bandy,1981