@article{ref1,
title="On the system of ventilation in the Wallsend Colliery",
journal="Proceedings of the institution of mechanical engineers",
year="1847",
author="",
volume="1",
number="1",
pages="31-39",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="0020-3483",
doi="10.1243/PIME_PROC_1847_001_046_02",
url="http://dx.doi.org/10.1243/PIME_PROC_1847_001_046_02"
}