C21, C93, D1, D90, D81, H4, I22, I15, I18
I12, D91, I18
I14, I18, O38, O32
C93, D04, I18, K42, R4
I18, I38, O12, O15, O20
I15, I18, I38
D73, H41, I18, K42
I10, I12, I18, D83, D91
Health and Economic Development
Health, Education, and Welfare, Microeconomics