title: [The advance and retreat of the agricultural frontier in Brazil:  an attempt at a structural and spatial interpretation].
authors.forename: D R
authors.initials: DR
authors.lastname: Sawyer
mesh_terms: D000383:Agriculture; D000569:Americas; D001938:Brazil; D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D004641:Emigration and Immigration; D007221:Industry; D007843:Latin America; D011056:Political Systems; D011153:Population; D011157:Population Dynamics; D012939:Social Planning; D012959:Socioeconomic Factors; D013020:South America
keywords: Agricultural Development; Americas; Brazil; Capitalism; Demographic Factors; Developed Countries; Developing Countries; Economic Conditions; Economic Development; Economic Factors; Historical Survey; Industrialization; Latin America; Macroeconomic Factors; Migration; Migration, Internal; Political Systems; Population; Population Dynamics; Rural Development; Settlement And Resettlement; Socioeconomic Factors; South America; Turnaround Migration