@article{ref1,
title="Some estimates of vital rates for Sierra Leone",
journal="AFRO technical papers",
year="1975",
author="Tekse, K.",
volume="",
number="9",
pages="7-39",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0250-8621",
doi="",
url="http://dx.doi.org/"
}