Metallurgy: A Brief Outline of the Modern Processes for Extracting the More Important MetalsWilhelm BorchersVyprodáno4,3Pohlídat
Electric Furnaces: The Production of Heat From Electrical Energy and the Construction of Electric FurnacesWilhelm BorchersVyprodáno4,3Pohlídat
Electric Smelting and Refining: The Extraction and Treatment of Metals by Means of the Electric Current. Being the 2D Ed. of "Elektro-Metallurgie."Wilhelm BorchersVyprodáno4,3Pohlídat
