por Mine Ventilation Symposium (11 : 2006 : University Park, Pennsylvania) | Mutmansky, Jan M [editor] | Ramani, R. V [editor].
por Mine Ventilation Symposium (10 : 2004 : Anchorage, Alaska) | Ganguli, R [editor] | Bandopadhyay, Sukumar [editor].
por Mcpherson, Malcolm J [autor].