The American Economic Association's registry for randomized controlled trials
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663 Trials Found
C91, D70, D91
D91, I38
C93, D91, H26
H42, L95, D91, O18
C92; D83; D91
D64, D91
H53 (Government Expenditures and Welfare Programs) D91 (Role and Effects of Psychological
C99, D11, D81, D91
C99; D69; D91; J15
C90, D64, D91