The American Economic Association's registry for randomized controlled trials
Select the trial sections you'd like to search within...
93 Trials Found
I20; I21; I24
I20, I21
J13 Early childhood stimulation; other codes: I20, I25, I30, I38
I20; I31
I20
I20 General, I32 Measurement and Analysis of Poverty, I21 Analysis of Education
I10, I18, C93, I20
I20, I31
O1, I20