Surface and underground geological prediction of bad roof conditions in collieries of the western coalfield, New South Wales, Australia
1981 ◽
Vol 18
(5)
◽
pp. 93
2000 ◽
Vol 44
(4)
◽
pp. 483-484
◽
2009 ◽
2009 ◽
2009 ◽
1918 ◽
Vol 86
(2236supp)
◽
pp. 301-301