@article{ref1,
title="The United Mine Workers of America look at occupational health",
journal="American journal of public health",
year="1971",
author="Kerr, L. E.",
volume="61",
number="5",
pages="972-978",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}