@article{ref1,
title="Oral and dental diseases of occupational origin",
journal="Deutsche Stomatologie (1951)",
year="1967",
author="Holzheu, W.",
volume="17",
number="4",
pages="272-283",
abstract="<p>[Abstract unavailable]</p><p>Language: de</p>",
language="de",
issn="0012-0790",
doi="",
url="http://dx.doi.org/"
}