De re metallica - Agricola, Georgius, 1494-1555; Hoover, Herbert, 1874-1964; Hoover, Lou Henry, 1874-1944 (New York : Dover Publications, Inc., 1950)
Keywords: hornictví -- díla do r. 1800; metalurgie -- díla do r. 1800; metallurgy -- early works to 1800; mining -- early works to 1800; pojednání; essays