The American Economic Association's registry for randomized controlled trials
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485 Trials Found
D63, D91, I21, J15
C73, C91, D83
D31, G51, D63
C9, C91
C91, D83, D84
D63, C93, and H20.
D63, D8, D91, I31
C91; D83; D91
C91 ; D12 ; D83
C91, E42, E58