@article{ref1,
title="The Pennsylvania regulations",
journal="Archives of environmental health",
year="1966",
author="Lieben, J.",
volume="12",
number="4",
pages="484-485",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0003-9896",
doi="",
url="http://dx.doi.org/"
}