Advanced Coal Mining, Vol. I (B. M. Vorobjev, R. T. Deshmukh - 1966) (ID:39489)
Advanced Coal Mining, Vol II (B. M. Vorobjev, R. T. Deshmukh - 1966) (ID:39756). Year Published: 1966. No edition remarks. 520 pages. No dust jacket. Brown cloth covered boards. Black and white diagrams throughout.