OBERT,Leonard. (1967). Rock mechanics and the design of structures in rock - Leonard obert,wilbur I Duvall. John Wiley & Sons,Inc.
Chicago Style (17th ed.) CitationOBERT,Leonard. Rock Mechanics and the Design of Structures in Rock - Leonard Obert,wilbur I Duvall. John Wiley & Sons,Inc, 1967.
MLA (8th ed.) CitationOBERT,Leonard. Rock Mechanics and the Design of Structures in Rock - Leonard Obert,wilbur I Duvall. John Wiley & Sons,Inc, 1967.
Warning: These citations may not always be 100% accurate.