> Multivolume work
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2:
Assessment of industrial hazardous waste practices in the metal smelting and refining industry vol. II Primary and secondary nonferrous smelting and refining by Richard P. Leonard [and others], Calspan Corporation
Washington: Environmental Protection Agency, Hazardous Waste Management Division, Office of Solid Waste, 1977
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3:
Assessment of industrial hazardous waste practices in the metal smelting and refining industry vol. III Ferrous smelting and refining by Richard P. Leonard [and others], Calspan Corporation
Washington: Environmental Protection Agency, Hazardous Waste Management Division, Office of Solid Waste, 1977
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4:
Assessment of industrial hazardous waste practices in the metal smelting and refining industry vol. IV Appendices by Richard P. Leonard [and others], Calspan Corporation
Washington: Environmental Protection Agency, Hazardous Waste Management Division, Office of Solid Waste, 1977