Home | << 1 >> |
Godard, R. R. (1970). Mine Water Treatment – Frick-district. Min. Congr. J., 56(3), 36–&. |
Lovell, H. L. (1971). Limestone Treatment Of Coal Mine Drainage. Min. Congr. J., 57(10), 28–&. |
Lovell, H. L. (1971). Mine Water Treatment Control. Min. Congr. J., 57(6), 83–&. |