Percy, J. Metallurgy : the art of extracting metals from their ores, and adapting them to various purposes of manufacture : with illustrations chiefly from original drawings, carefully laid down to scale / by John Percy; J. Percy .— : John Murray, 1861 .— 762 с. — Lang: eng .— URL: https://rucont.ru/efd/114223 (дата обращения: 16.07.2024)