A treatise on coal, mine-gases, and ventilation : with copies of researches on the gases enclosed in coal / by J.W. Thomas.
License information
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
A treatise on coal, mine-gases, and ventilation : with copies of researches on the gases enclosed in coal / by J.W. Thomas. Credit: Wellcome Collection. Public Domain Mark