@article{ref1,
title="Industrial hygiene program in a state health department",
journal="American journal of public health",
year="1939",
author="Nau, C. A.",
volume="29",
number="2",
pages="151-157",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}