![Rock property changes under air pollutant action. Symposium. In New Horizons in rock mechanics : Hagerty, DJ, Univ. Louisville, Kentucky, USA Ullrich, CR, Univ. Illinois, Urbana, USA 14F, 19R. Proc. 14th Symposium on Rock Mechanics, ASCE, New York, 1973, P127–155]()
Rock property changes under air pollutant action. Symposium. In New Horizons in rock mechanics : Hagerty, DJ, Univ. Louisville, Kentucky, USA Ullrich, CR, Univ. Illinois, Urbana, USA 14F, 19R. Proc. 14th Symposium on Rock Mechanics, ASCE, New York, 1973, P127–1551974