000			004570000a22001810004500
245			_aRock slope engineering
100			_aHoek, Evert
100			_aBray, John
250			_a3rd rev. ed.
260			_aLondon _bInstitution of Mining & Metallurgy _c1981
300			_a358p. : ill., photos.
500			_aIndex included.
020			_a0900488573
080			_a624.127 _bH6
650			_aCIVIL ENGINEERING - Slopes
041			_aEN
942			_cBK
999			_c117989 _d117989