@article{ref1,
title="Industrial hygiene activities in the Public Health Service",
journal="American journal of public health",
year="1943",
author="Townsend, JG",
volume="33",
number="4",
pages="324-329",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}