TY - GEN AU - Obert, Leonard AU - Duvall, Wilbur I. TI - Rock Mechanics and The Design of Structures in Rock SN - 9780471652359 U1 - 624.15132 OBE/R PY - 1967/// PB - Wiley -- KW - Stress -- Strain -- Elasticity -- Coordinates -- Solids -- Statistical -- Experimental -- Instrumentation -- Situ -- Caving -- Bursts -- Gas -- Bolting ER -