Jones, M. J. (1975). Minerals and the environment: Proceedings of an international symposium, organized by the Institution of Mining and Metallurgy, with the cooperation of the Institute of Quarrying and the Institution of Mining Engineers, held in London from 4 to 7 June, 1974. [London]: The Institution of Mining and Metallurgy.
Παραπομπή Chicago StyleJones, M. J. Minerals and the Environment: Proceedings of an International Symposium, Organized By the Institution of Mining and Metallurgy, With the Cooperation of the Institute of Quarrying and the Institution of Mining Engineers, Held in London From 4 to 7 June, 1974. [London]: The Institution of Mining and Metallurgy, 1975.
Παραπομπή MLAJones, M. J. Minerals and the Environment: Proceedings of an International Symposium, Organized By the Institution of Mining and Metallurgy, With the Cooperation of the Institute of Quarrying and the Institution of Mining Engineers, Held in London From 4 to 7 June, 1974. [London]: The Institution of Mining and Metallurgy, 1975.