@article{ref1,
title="Development of industrial hygiene in the United States",
journal="American journal of public health",
year="1938",
author="Bloomfield, JJ",
volume="28",
number="12",
pages="1388-1337",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0090-0036",
doi="",
url="http://dx.doi.org/"
}