The Investigation of Mine Air; an Account by Several Authors of the Nature, Significance, and Practical Methods of Measurement of the Impurities Met With in the Air of Collieries and Metalliferous Mines;

The Investigation of Mine Air; an Account by Several Authors of the Nature, Significance, and Practical Methods of Measurement of the Impurities Met With in the Air of Collieries and Metalliferous Mines;