@article{ref1,
title="Crime and Economic Change in Philadelphia, 1925-1934",
journal="Journal of criminal law and criminology (1931-1951)",
year="1936",
author="Wagner, A. C.",
volume="27",
number="4",
pages="483-490",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="0885-2731",
doi="",
url="http://dx.doi.org/"
}