@article{ref1,
title="Classification of poisoning by pesticides",
journal="Vrachebnoe Delo",
year="1972",
author="Pol'chenko, V. I.",
volume="2",
number="",
pages="131-134",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0049-6804",
doi="",
url="http://dx.doi.org/"
}