The American Economic Association's registry for randomized controlled trials
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255 Trials Found
O33, G21, I21, J24, D12, D91, C93
I21, I24, I26, I29
I21, I23, I28
I21, I25, J22, O12
I21, I25, Q54
I21 ; I38 ; J24 ; O12 ; O15
I20, I21
I21 - Analysis of Education
I21, J16.