@article{ref1,
title="Hygienic norms and standardization in the field of work protection",
journal="Gigiena Truda i Professional'nye Zabolevaniia",
year="1977",
author="Izmerov, N. F.",
volume="",
number="11",
pages="24-28",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9919",
doi="",
url="http://dx.doi.org/"
}