R. O. Kneisley

R.K.

titleISBN-13
(ISBN-10)
year of publica-
tion
other author(s)
Longwall Gate Road Stability in Four Deep Western U.S. Coal Mines978-99943-713-7-2
(99943-713-7-1)
1994Lance R. Barron ยท Matthew J. Demarco

R.O. Kujala