TY - BOOK AU - Hoek,Evert AU - Bray,John TI - Rock Slope Engineering SN - 0900488212 U1 - 624.16 19 PY - 1974/// CY - London PB - Institution of Mining and Metallurgy KW - Rock Slopes N1 - Includes bibliographical references and indexs ( p. 308 - 309 ) ER -