The coal supply : being the presidential address of Sir W.G. Armstrong, C.B., LL.D., D.C.L., F.R.S., &c., to the members of the North of England Institute of Mining and Mechanical Engineers.
Armstrong, W. G.(William George),Baron,1810-1900.
North of England Institute of Mining and Mechanical Engineers.
Newcastle-upon-Tyne : A. Reid,
1873.
Coal.