Practical coal mining: a manual for managers, under-managers, collieny engineers & others with numerous problems arising from collieny work, with figures and diagrams
KERR, G.L. 
Practical coal mining: a manual for managers, under-managers, collieny engineers & others with numerous problems arising from collieny work, with figures and diagrams KERR, G.L. - L. HENRY SUTHERAN & CO. 1905
In English
Ub XI, 5 1905
                        Practical coal mining: a manual for managers, under-managers, collieny engineers & others with numerous problems arising from collieny work, with figures and diagrams KERR, G.L. - L. HENRY SUTHERAN & CO. 1905
In English
Ub XI, 5 1905