Rock mass classifications for tunnel purposes - correlations between the systems proposed by Wickham et al., Bieniawski and Rocha : Costa-Pereira, A S; Rodrigues-Carvalho, J A Proc 6th International Conference on Rock Mechanics, Montreal, 30 Aug–10 Sept 1987 V2, P841–844. Publ Rotterdam: A A Balkema, 1987

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 103 KB
• Volume: 25
• Category: Article
• ISSN: 0148-9062
• DOI: 10.1016/0148-9062(88)91609-9