(1980). Underground rock engineering: 13th Canadian rock mechanics symposium (The H. R. rice memorial symposium), Toronto, Ontario, May 28-29, 1980 ;. Toronto: The Canadian Institute of Mining and Metallurgy.
Παραπομπή Chicago StyleUnderground Rock Engineering: 13th Canadian Rock Mechanics Symposium (The H. R. Rice Memorial Symposium), Toronto, Ontario, May 28-29, 1980 ;. Toronto: The Canadian Institute of Mining and Metallurgy, 1980.
Παραπομπή MLAUnderground Rock Engineering: 13th Canadian Rock Mechanics Symposium (The H. R. Rice Memorial Symposium), Toronto, Ontario, May 28-29, 1980 ;. Toronto: The Canadian Institute of Mining and Metallurgy, 1980.
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