BRAWNER,C.O
STABILITY IN UNDERGROUND MINING FIRST INTERNATIONAL CONFERENCE PROCEEDINGS(VANCO - NEW YORK SOCIETY OF MINING ENGG. 1983 - 24X16
622.2 B7949
STABILITY IN UNDERGROUND MINING FIRST INTERNATIONAL CONFERENCE PROCEEDINGS(VANCO - NEW YORK SOCIETY OF MINING ENGG. 1983 - 24X16
622.2 B7949