@article{ref1,
title="Effects of family density and mothers' education on preschoolers' motor skills",
journal="Perceptual and motor skills",
year="1974",
author="Shapiro, A. H.",
volume="38",
number="1",
pages="79-86",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0031-5125",
doi="",
url="http://dx.doi.org/"
}