Osborne, D. G.
Coal preparation technology / D.G. Osborne. - London : Graham & Trotman, 1988. - 2 v, xiv, various pagings : ill.
1853330922
90055080
Coal preparation.
Coal preparation technology / D.G. Osborne. - London : Graham & Trotman, 1988. - 2 v, xiv, various pagings : ill.
1853330922
90055080
Coal preparation.