@article{ref1,
title="Determination of morbidity with temporary work incapacity in workers on machine tractor stations and state farms in bulgaria",
journal="Pracovni Lekarstvi",
year="1963",
author="Dragnev, V.",
volume="15",
number="",
pages="161-164",
abstract="<p>[Abstract unavailable]</p><p>Language: cs</p>",
language="cs",
issn="0032-6291",
doi="",
url="http://dx.doi.org/"
}