@article{Haines1978,
author = {Haines, M.R.},
title= {Fertility decline in industrial America: An analysis of the Pennsylvania anthracite region, 1850-1900, using ‘own children’ methods},
year = {1978},
doi = {10.2307/2173565},
journal = {Population Studies },
volume = {32},
number = {2},
pages = {327--354},
}