"Metallurgy." . . . . "Mineral industries Exhibitions." . . "Great Britain. Committee on Education. Department of Science and Art." . . "Métallurgie Catalogues." . . "Mineral industries." . . . . . "Catalogs and collections"@en . . . . . . . . . . . . . . . . . . . . . . . "Sources"@en . "Catalogue of the collection of metallurgical specimens formed by the late John Percy ... now in the South Kensington Museum"@en . . . . "Catalogue of the Percy collection of metallurgy in the South Kensington Museum"@en . . . . "Catalogs"@en . "Catalogue of the collection of metallurgical specimens formed by the late John Percy"@en . . . "Exhibition catalogs"@en . . . "History"@en . . "Catalogue of the collection of metallurgical specimens formed by the late John Percy, Esq., M.D., F.R.S., now in the South Kensington Museum"@en . "Catalogue of the collection of metallurgical specimens formed by the late John Percy, now in the South Kensington Museum" . "Mines Industrie Expositions." . . "Metallurgy Catalogs and collections." . . "South Kensington Museum." . .