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Workshop on Rock Reinforcement. Vol.I- Lecture notes

By United Nations Development Programme. New Delhi United Nations Development Programme 1986 . p.493

By United Nations Development Programme. New Delhi United Nations Development Programme 1986 . p.229

By United Nations Development Programme.. New Delhi United Nations Development Programme. 1986 . p.455

By United Nations Development Programme.. New Delhi United Nations Development Programme. 1986 . p.469