@techreport{Ribe1980,
author = {Ribe, H. and Schultz, T.P.},
title= {Migrant and Native Fertility in Colombia in 1973: Are Migrants Selected According to their Reproductive Preferences},
year = {1980},
publisher = {Economic Growth Center},
address = {New Haven: Yale University},
number = {Center Discussion Paper No. 355},
}