The American Economic Association's registry for randomized controlled trials
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823 Trials Found
C91, D81, D91
C78, C91, D63
D47, D81, D82, D83
D12, D81, M31, L66
C91 D03 J16
C93 ; C91 ; D91 ; D12
C91; D83; D84; D91
C91, D31, D63
C91, D01, D83
L13, C91, C72, D82