I10, I18, C93, I20
D22 Firm Behavior: Empirical Analysis, Q4 Energy, Q5 Environmental Economics
I20, I31
O1, I20
D22,D83,I20,J20,O31,L25,L26,M13,M53
I20, I28, M5, O32
C93, I20, I28, O15
I20, J13
I12, Health Behavior
Health and Inequality; Health Behavior; Health Insurance, Public and Private; Welfare Economics