@article{Preston1975,
author = {Preston, S.H.},
title= {The changing relation between mortality and level of economic development},
year = {1975},
doi = {10.1080/00324728.1975.10410201},
URL = {https://doi.org/10.1080/00324728.1975.10410201},
volume = {29},
number = {2},
pages = {231‒248},
}