@article{ref1,
title="Mass communication media and their social impact",
journal="Salud publica de Mexico",
year="1969",
author="Menéndez, A.",
volume="11",
number="4",
pages="495-499",
abstract="<p>[Abstract unavailable]</p><p>Language: es</p>",
language="es",
issn="0036-3634",
doi="",
url="http://dx.doi.org/"
}