The American Economic Association's registry for randomized controlled trials
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822 Trials Found
C93, I12, D90, H0
J13, J43, Q12, C93, O17
J12, J16, G51, G53, D14, I31
J16, J24, I11, O33, L86
C91, D90, D91
I21, I31, J16
C93, D83, J31, J71, M51
C83; C91; D64; D90; Z13
J16, Q54,Q58, H4
I15, I18, I38, J13, O15, C93, D91