@article{ref1,
title="Results of blood lead levels in the model cities area--1971",
journal="Medical annals of the District of Columbia",
year="1972",
author="Standard, R. L.",
volume="41",
number="5",
pages="323-324",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0025-6986",
doi="",
url="http://dx.doi.org/"
}