@article{ref1,
title="Transportation which is detrimental to the health of the pregnant worker",
journal="Zentralblatt fur Arbeitsmedizin und Arbeitsschutz",
year="1969",
author="Muller, R.",
volume="19",
number="6",
pages="174-174",
abstract="<p>[Abstract unavailable]</p> <p>Language: de</p>",
language="de",
issn="0044-4049",
doi="",
url="http://dx.doi.org/"
}