@article{ref1,
title="Tabulation of toxicity classes",
journal="American industrial hygiene association quarterly",
year="1949",
author="Hodge, H. C. and Sterner, J. H.",
volume="10",
number="4",
pages="93-96",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0096-820X",
doi="",
url="http://dx.doi.org/"
}