@article{ref1,
title="Overpopulation",
journal="Sociological review, The",
year="1923",
author="Geddes, P.",
volume="a15",
number="3",
pages="235-236",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0038-0261",
doi="10.1111/j.1467-954X.1923.tb01455.x",
url="http://dx.doi.org/10.1111/j.1467-954X.1923.tb01455.x"
}