Brady, B. T. Tilt precursors in rock before failure : a laboratory investigation Brady, B. T. - Washington Bureau of mines 1975 - 9 p. - RI 8101 . Subjects--Topical Terms: MINERIAMINING Subjects--Index Terms: DEFORMACION DE LA ROCA MECANICA DE ROCAS ROCK DEFORMATION ROCK MECHANICS Universal Decimal Class. No.: 622