@article{ref1,
title="Occupational fitness of adolescents for the job of tractor driver-mechanic",
journal="Gigiena i Sanitariia",
year="1973",
author="Kartsev, I. D. and Besstrashnaia, N. A.",
volume="38",
number="4",
pages="23-26",
abstract="<p>[Abstract unavailable]</p><p>Language: ru</p>",
language="ru",
issn="0016-9900",
doi="",
url="http://dx.doi.org/"
}