@article{ref1,
title="The health of agricultural workers",
journal="WHO chronicle",
year="1966",
author="",
volume="20",
number="12",
pages="442-446",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0042-9694",
doi="",
url="http://dx.doi.org/"
}