WILLIAMSON, G.E.
PROCEEDINGS: RAPID EXCAVATION AND TUNNELING: CONFERENCE SAN FRANCISCO, CALIFORNI - METALLURGYLITTLETON SOCIETY FOR MINING 1995 - 832p.,24x16cms.
0873351320
622.2606 W729
PROCEEDINGS: RAPID EXCAVATION AND TUNNELING: CONFERENCE SAN FRANCISCO, CALIFORNI - METALLURGYLITTLETON SOCIETY FOR MINING 1995 - 832p.,24x16cms.
0873351320
622.2606 W729