Farm population of the United States: 1979.
D000367:Age Factors; D000383:Agriculture; D000569:Americas; D003710:Demography; D019049:Developed Countries; D004467:Economics; D004651:Employment; D005006:Ethnicity; D006280:Health Workforce; D006630:Hispanic or Latino; D009656:North America; D011153:Population; D011154:Population Characteristics; D011156:Population Density; D011157:Population Dynamics; D012107:Research Design; D012424:Rural Population; D012737:Sex Factors; D012923:Social Class; D012959:Socioeconomic Factors; D014481:United States; D014505:Urban Population
Age Factors; Agricultural Workers; Americas; Demographic Factors; Developed Countries; Economic Factors; Employment Status--statistics; Error Sources; Ethnic Groups; Hispanics; Human Resources; Labor Force; North America; Northern America; Occupational Status; Population; Population Characteristics; Population Dynamics; Population Size--statistics; Rural Population; Sex Factors; Socioeconomic Factors; Socioeconomic Status; United States; Urban Population