Population size, density, urbanization and the division of labor.
Willis
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D000569:Americas; D003710:Demography; D019049:Developed Countries; D003906:Developing Countries; D004467:Economics; D004651:Employment; D005843:Geography; D006280:Health Workforce; D009656:North America; D011153:Population; D011154:Population Characteristics; D011156:Population Density; D011157:Population Dynamics; D012044:Regression Analysis; D012106:Research; D012424:Rural Population; D012923:Social Class; D012959:Socioeconomic Factors; D014481:United States; D014505:Urban Population; D014507:Urbanization
Americas; Demographic Analysis; Demographic Factors; Developed Countries; Developing Countries; Economic Factors; Employment Status; Geographic Factors; Human Resources; Labor Force; North America; Northern America; Population; Population Characteristics; Population Density; Population Dynamics; Population Size; Research Methodology; Rural Population; Socioeconomic Factors; Socioeconomic Status; Spatial Distribution; Statistical Regression; United States; Urban Population; Urban Spatial Distribution; Urbanization