Rock mechanics and strata control in mines.
- Johannesburg, 1965.
- vii, 606 p. : ill. ; 25 cm.
On cover: Symposium on rock mechanics and strata control in mines, J ohannesburg, April 1963-June 1965. Papers originally published in the Journal of the South African Inst itute of Mining and Metallurgy, April 1963-June 1965.