@article{ref1,
title="A study of relative values of thirty important activities in the physical education program for boys",
journal="Research quarterly. American Physical Education Association",
year="1931",
author="",
volume="2",
number="1",
pages="115-174",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="2326-7402",
doi="10.1080/23267402.1931.10625008",
url="http://dx.doi.org/10.1080/23267402.1931.10625008"
}