Does 3rd age plus 3rd world equal 3rd class?
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D000328:Adult; D000367:Age Factors; D000368:Aged; D003710:Demography; D003906:Developing Countries; D004467:Economics; D005069:Evaluation Studies as Topic; D006285:Health Planning; D009826:Old Age Assistance; D009934:Organization and Administration; D011153:Population; D011154:Population Characteristics; D011157:Population Dynamics
Adult; Age Factors; Aged; Critique; Demographic Factors; Demographic Transition; Developing Countries; Economic Factors; Microeconomic Factors; Old Age Security; Organization And Administration; Population; Population Characteristics; Population Dynamics; Program Activities; Programs