The American Economic Association's registry for randomized controlled trials
Select the trial sections you'd like to search within...
144 Trials Found
J13, J22, C83
C93, D90, I28, J13
J13 Early childhood stimulation; other codes: I20, I25, I30, I38
C93, D83, I12, J13.
C93, D83, O15, J13.
I00, J13
D1, D13, C9, J13
C93, D83, I12, J13
J13, A20