@article{ref1,
title="Relationships of Heredity and Environment in Behavior",
journal="Journal of psychology, The",
year="1940",
author="Metfessel, Milton",
volume="10",
number="1",
pages="177-198",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0022-3980",
doi="10.1080/00223980.1940.9916992",
url="http://dx.doi.org/10.1080/00223980.1940.9916992"
}