D73; H11; O12; O33; O35
D72, D73, D91, H23, Q38, P11
I21 - Analysis of Education
D22, G18, L25, M48, Q52
C91 Laboratory, Individual Behavior; C92 Laboratory, Group Behavior;
C93;D03;D21;D83;D84;J64;O17;O12
Packages; Payment Methods, L2 - Firm Objectives, Organization, and Behavior, D23 - Organizational Behavior; Transaction Costs; Property Rights,
Health Behavior
Health Behavior
D22, D25, H25, H32