@article{ref1,
title="List of gas companies who added water-gas to coal-gas in 1898, and the proportionate amounts thereof",
journal="Public health",
year="1900",
author="",
volume="12",
number="7",
pages="545-537",
abstract="[Abstract unavailable]  <p>Language: en</p>",
language="en",
issn="0033-3506",
doi="",
url="http://dx.doi.org/"
}