The American Economic Association's registry for randomized controlled trials
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775 Trials Found
D4, D81, L00, M31
C91, D70, D91
D91, I38
H42, L95, D91, O18
C90 C91 D63 D90 H23
C92; D83; D91
D64, D91
H53 (Government Expenditures and Welfare Programs) D91 (Role and Effects of Psychological
C99, D11, D81, D91
D11 · D81 · D83 · D87