R.W.O. Kersten

titleISBN-13
(ISBN-10)
year of publica-
tion
other author(s)
Increased Underground Extraction of Coal978-O-62O-O6O28-8
(O-62O-O6O28-X)
1982C.J. Fauconnier

R.K. · W. K. · W. Kersten

R. W. O. Lang