The American Economic Association's registry for randomized controlled trials
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847 Trials Found
C11, C91, D83, D84
C91, D70, D91
D91, I38
C93, D91, H26
H42, L95, D91, O18
C90 C91 D63 D90 H23
C92; D83; D91
D64, D91
L41, C91, D22
H53 (Government Expenditures and Welfare Programs) D91 (Role and Effects of Psychological