@article{ref1,
title="Machines in tabulating vital statistics",
journal="Public health",
year="1917",
author="",
volume="30",
number="",
pages="14-14",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0033-3506",
doi="",
url="http://dx.doi.org/"
}