por International Symposium "applications Of Computers And Operations Research In The Mineral Industry" (17 : 1982 : Colorado School Of Mines) | Johnson, Thys B [editor] | Barnes, Randal J [editor] | Colorado School of Mines | Society of Mining Engineers of AIME.
por Weiss, Alfred [editor] | Society of Mining Engineers of AIME. Mining and Exploration Division.
por International Conference On Caving And Sublevel Stoping (1981 : Denver, Colorado) | Stewart, Daniel R [editor] | Society of Mining Engineers of AIME. Mining and Exploration Division.