The American Economic Association's registry for randomized controlled trials
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831 Trials Found
D83, D91
C91, D63, D91, H23
C92; D83; D91
C91, D82, D83, D91, J71, O33
D12, D91, L00
I21, I25, J22, O12
C91, D8, D91
I24 , D90 , D91
D62, D64, D91, Q54