The American Economic Association's registry for randomized controlled trials
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391 Trials Found
C91; D81; D83; D91
C91, D01, D81, D83
I12, I18, D81, K13
D81, D82, I11
C93, D83, D90
C90, D60, D90
C93, D90, D83
D12, D81, D91
D83, D90, D91