@article{ref1,
title="Alcoholism and the abuse of alcohol by black workers of the mining industry",
journal="Proceedings of the Mine Medical Officers' Association",
year="1977",
author="du Plessis, G. M.",
volume="57",
number="424",
pages="5-9",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0026-4490",
doi="",
url="http://dx.doi.org/"
}