The American Economic Association's registry for randomized controlled trials
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903 Trials Found
D91, D72, C92
D64, D91
C72, C91, D91
D63, D72, D91, H23, K32
D19, D91, J16, Z13
C91, D91, J16, Z11
D9, D83, D64, C91
C99, D11, D81, D91
C9; D72; D83; D91; H23 ; Q52
D12, D01, C93, D91, I12