Minerals, Metals and Materials Society. Meeting, Minerals, Metals and Materials Society. Extraction and Processing Division, International Symposium on Extraction and Processing for the Treatment and Minimization of Wastes, & Hager, J. P. (1993). Extraction and processing for the treatment and minimization of wastes, 1994: Proceedings of an international symposium. Minerals, Metals & Materials Society.

Minerals, Metals and Materials Society. Meeting, Metals and Materials Society. Extraction and Processing Division Minerals, International Symposium on Extraction and Processing for the Treatment and Minimization of Wastes, и John P. Hager. Extraction and Processing for the Treatment and Minimization of Wastes, 1994: Proceedings of an International Symposium. Warrendale, Pa.: Minerals, Metals & Materials Society, 1993.

Minerals, Metals and Materials Society. Meeting, et al. Extraction and Processing for the Treatment and Minimization of Wastes, 1994: Proceedings of an International Symposium. Minerals, Metals & Materials Society, 1993.