@article{Billewicz1981,
author = {Billewicz, W.Z. and McGregor, I.A.},
title= {The demography of two West African (Gambian) villages, 1951‒75},
year = {1981},
doi = {10.1017/S0021932000013390},
volume = {13},
number = {2},
pages = {219‒240},
}