Pickering R. G. B. & The South African Institute of Mining and Metallurgy. The optimization of mining method and equipment.
Citace podle Chicago (17th ed.)Pickering R. G. B. a The South African Institute of Mining and Metallurgy. The Optimization of Mining Method and Equipment.
Citace podle MLA (9th ed.)Pickering R. G. B. a The South African Institute of Mining and Metallurgy. The Optimization of Mining Method and Equipment.
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