@article{ref1,
title="Various types of accidents from the viewpoint of preventive medicine: avoidance of the same",
journal="Medicina tropical, la",
year="1962",
author="Piédrola Gil, G. and Piedrola angulo, G.",
volume="38",
number="",
pages="505-525",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0025-7958",
doi="",
url="http://dx.doi.org/"
}